Pevlika

Equation Solver

Type powers with ^ (x^2) or x², multiplication with * or by writing 2x, and functions such as sqrt(x), sin(x), ln(x) and e^x. Answers are calculated exactly with fractions and radicals when possible.

Solutions

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Step by step

    How to use Equation Solver

    Type an equation with “=”. Separate several equations with commas to solve a linear system.

    1. Type the equation, for example x^3 - 6x^2 + 11x - 6 = 0.
    2. Optionally choose which letter to solve for.
    3. Read exact solutions (fractions, radicals, complex numbers) and the method used.

    Questions

    Which equations are solved exactly?

    Linear and quadratic equations always; higher polynomials when they have rational roots, with any remaining quadratic solved by the formula. Remaining factors and non-polynomial equations are solved numerically.

    Can it solve for a letter other than x?

    Yes. Choose the variable, or type “solve … for y”. Equations with other letters are solved when they are linear in that variable.

    Why was a solution rejected?

    In rational equations, values that make a denominator zero are not allowed even if they solve the multiplied-out equation; they are listed as rejected.

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