Résolveur de Mathématiques
Snap or paste a photo of a printed equation, or type it, and get the answer with clear step-by-step explanations
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Also: pi, e, phi, ^ for powers, ! for factorial, % for percent, and implicit multiplication such as 2x or 3(4+1).
À propos de cet outil
Snap or paste a photo of a printed equation and get the answer with clear, step-by-step explanations - or type it in yourself. The photo is read in your browser using on-device text recognition, so it is never uploaded, and the text it recognised is always shown in an editable box before anything is solved, because a misread should be visible and correctable rather than silently turned into a wrong answer. Photo reading is tuned for clearly printed algebra such as 2x + 1 = 9; handwriting, calculus, geometry and word problems are beyond what on-device recognition can do reliably, and the tool says so rather than guessing. Beyond that it is three tools in one, aimed at the questions that actually come up in homework. Calculate mode evaluates an expression as you type, with the functions a scientific calculator has - trigonometry with a degrees or radians switch, logs, roots, factorials, combinations and permutations - plus your own named variables. Solve mode takes a linear or quadratic equation and shows the working line by line: how it is rearranged, what the discriminant comes to, and where each root comes from, so you can follow the method rather than just copy an answer. Numbers mode breaks a whole number into its prime factors, lists its divisors, simplifies fractions and finds the GCD and LCM. It accepts the shorthand people actually write, so 2x, 3(4+1) and 2sin(30) all work, and everything runs in your browser with nothing sent anywhere.
Comment utiliser cet outil
- Pick a modeCalculate for an expression, Solve for an equation, Numbers for factors and fractions.
- Add a photo, or type itIn Solve mode you can drop, browse or paste a photo of a printed equation. The recognised text appears in an editable box for you to check.
- Type as you would on paperImplicit multiplication is understood, so 2x and 3(4+1) need no extra symbols.
- Set degrees or radiansThe single most common cause of a wrong trigonometry answer. The switch is next to the input.
- Add variables if you need themDefine x, y or any name once and reuse it across the expression.
- Read the stepsIn Solve mode each line shows what changed and why, so the method is visible, not just the result.
Pourquoi l’utiliser
- Shows the working for linear and quadratic equations, including the discriminant, rather than only the answer.
- Understands student shorthand such as 2x, 3(4+1) and 5! instead of demanding programming syntax.
- Has a degrees and radians switch, which prevents the most common trigonometry mistake.
- Detects when an equation is not linear or quadratic and says its answer is approximate rather than guessing confidently.
- Includes prime factorisation, divisors, fraction simplifying, GCD and LCM in one place.
- Gives readable error messages that point at what is wrong, instead of NaN.
- Runs entirely in your browser - nothing you type is uploaded.
Usages courants
- Checking homework answers and, more usefully, checking the method.
- Solving quadratics without hand-applying the formula every time.
- Working out combinations and permutations for probability questions.
- Breaking a number into prime factors or finding a lowest common denominator.
- Using one expression with different variable values to see how the result moves.
Conseils pour de meilleurs résultats
- Check the degrees and radians switch before any trigonometry. sin(30) is 0.5 in degrees and about -0.988 in radians.
- You can leave off the "= 0" - typing x^2 - 9 solves it just the same.
- Use mod(a, b) for remainders. A trailing % means percent here, so 15% is 0.15.
- Non-integer answers show a fraction underneath when a tidy one exists, which is often the form a teacher wants.
Erreurs à éviter
- Leaving the calculator in radians for a degrees question, or the reverse.
- Writing 2^3^2 and expecting 64. Powers group from the right, so it is 2^(3^2) = 512.
- Expecting -2^2 to be 4. The power binds tighter than the minus sign, so it is -4. Use (-2)^2 for 4.
- Trusting an approximate answer as exact. When the tool says the roots were found by searching, it means there may be others outside the range.
Questions fréquentes
Yes, in Solve mode. Drop, browse or paste a photo and the equation is read on your device using built-in text recognition, then placed in an editable box so you can correct anything it misread before solving. It is tuned for clearly printed algebra - handwriting, calculus, geometry and word problems are not supported, because on-device recognition cannot read them reliably and a confident wrong answer is worse than none.
No. The text recognition runs entirely in your browser using assets served from this site, so the image never leaves your device and is not stored.
Because text recognition makes predictable mistakes with maths - a zero read as an O, a lost power sign, or a stray mark read as an operator. The tool repairs the common ones and tells you which it changed, but the final check is yours. That is far safer than presenting a wrong answer as fact.
Yes, for linear and quadratic equations in one unknown. It shows the rearrangement, the discriminant calculation, and how each root falls out of the quadratic formula. For anything more complicated it finds the roots numerically and clearly labels them approximate.
It will find roots for them, but by searching between -100 and 100 rather than with a formula, and it tells you that is what it did. There may be further solutions outside that range, so treat those answers as approximate.
Almost certainly because the mode is set to radians. Switch it to degrees using the toggle beside the input. This is the single most common reason a trigonometry answer looks wrong.
No. 2x, 3(4+1) and 2sin(30) are all understood as multiplication, which is how these are written on paper.
A trailing % divides by 100, so 15% is 0.15 and 200 * 15% is 30. For remainders use mod(a, b) instead, which keeps the percent sign unambiguous.
Yes. Add a variable, give it a name and a value, and use that name anywhere in the expression. Changing the value updates the result immediately, which is handy for trying several cases.
No. The expression parser and the solver both run in your browser. Nothing you type is uploaded, and the history is cleared when you close the tab.