Equation Solver
Solution
Enter an equation above and click Solve
Advanced Equation Solver
Enter a numerical expression or an equation to evaluate it or find a value for a detected variable. The keypad provides plain-text notation for powers, roots, logarithms, trigonometric functions, derivatives, definite integrals, summations, and expansion. The preview helps you check what the entered notation represents before you run it.
Use a simple expression such as 2*x + 5 = 11 to solve for x, or sqrt(81) to evaluate a value. Calculus and symbolic features support particular forms, so verify the returned result by substituting it back into the original expression or by checking a derivative or integral independently when accuracy matters.
Want the ideas behind the steps? Read How to Solve Equations Step by Step: From Linear to Calculus.
Supported Features:
Linear Equations
ax + b = c, 2x + 5 = 11
Quadratic Equations
ax² + bx + c = 0, x² - 6 = x
Polynomial Equations
x³ - 8 = 0, x⁴ - 16 = 0
Radical Equations
√x = 5, ∛x = 2
Exponential Equations
2^x = 8, e^x = 10, x^x = 16
Logarithmic Equations
log(x) = 2, ln(x) = 1
Systems of Equations
y = x+3, y = x²+1 (use comma)
Complex Solutions
x² + 1 = 0 → x = ±i
Derivatives
d/dx(x²) = 2x, d/dx(sin(x))
Integrals
∫(x², 0, 5) definite integrals
Summations
Σ(n, 1, 10) sigma notation
Trig Functions
sin, cos, tan, asin, acos, atan
Equation Types
Determined Equations
Equations with numeric results: 2x + 4 = 10, √(25), 5! + 3². Perfect for homework and engineering calculations.
Undetermined Equations
Symbolic results with variables: d/dx(x³ + 2x), ∫x² dx, (a + b)². Ideal for algebra and calculus.
Expand Feature – Algebraic Expression Expansion
The Expand button allows you to expand algebraic expressions into their fully distributed form. This is useful for simplifying expressions, solving equations, or understanding how terms combine.
(a+b)²
→ a² + 2ab + b²
(a-b)²
→ a² - 2ab + b²
(a+b)³
→ a³ + 3a²b + 3ab² + b³
(a+b)(a-b)
→ a² - b² (difference of squares)
a(b+c)
→ ab + ac (distribution)
(x+2)²
→ x² + 4x + 4
Plain Text Input & Mathematical Preview
Enter equations using simple plain text notation. For example: d/dx(x^3 + 2x) or ∫(x^2, 0, 1). The Equation Preview reformats supported notation to make the input easier to inspect. The integral and summation buttons insert the notation used by this page, including the required bounds.
How to Use
- Enter your equation using the on-screen keypad or keyboard.
- Use functions like sin, log, ∫, d/dx, and powers as needed.
- Provide additional parameters for advanced functions (e.g., bounds for integrals).
- View the formatted equation in the preview section.
- Click Solve to get the result instantly.
About VioApps
This equation solver is part of VioApps, a browser-based collection of math and productivity tools. It is designed for students and engineers who need clear step-based results for algebra, derivatives, integrals, and summations. Calculations run in your browser using an open-source math engine.
Fast & Light
No downloads required
Secure
Your data stays private
Responsive
Works on all devices