These equation solvers allow you to solve many mathematical problems that can be expressed as an equation. These solvers allow you to solve first degree equations, quadratic equations, first and second degree inequalities, systems of equations, and to calculate the determinant of a second degree equation.

9 calculators- Solving quadratic equation with complex number : The complex number equation calculator returns the complex values for which the quadratic equation is zero.
- Calculation of the discriminant online : Calculator that allows the calculation of the discriminant of a quadratic equation online.
- Find equation of a straight line from two points : The equation straight line calculator allows to calculate the equation of a straight line from the coordinates of two points with step by step calculation.
- Find the equation of tangent line : The tangent line equation calculator is used to calculate the equation of tangent line to a curve at a given abscissa point with stages calculation.
- Pythagorean theorem calculator : The calculator uses the Pythagorean theorem to verify that a triangle is right-angled or to find the length of one side of a right-angled triangle.
- Solve for x calculator : The equation solver allows to solve equations with an unknown with calculation steps : linear equation, quadratic equation, logarithmic equation, differential equation.
- Inequality calculator : Inequality solver that solves an inequality with the details of the calculation: linear inequality, quadratic inequality.
- Solve system of linear equations : The solver of systems of linear equations allows to solve equations with several unknowns: system of equations with 2 unknowns, system of equations with 3 unknowns, system with n unknowns.
- Countdown solver : This countdown solver allows finding a target number from a set of integer in using arithmetic operations.