Question

What are quadratic equation? Give example

Answer 1

Definition of a quadratic equation:

A quadratic equation is any algebraic equation of highest degree $2$. The standard form of the quadratic equation in variable $x$ is $a{x}^2+bx+c=0$, where $a\mathrm{and}b$are coefficients, $c$ is constant and $a$ is a non zero number.

The examples of a quadratic equations are:

$$\begin{gathered} \left(i\right)x^2+3x+2=0 \\ \left(ii\right)2x^2-x+1=0 \\ \left(iii\right)x^2+x=0 \end{gathered}$$

Thus, a quadratic equations are the polynomial equation of degree two in one variable.