Class 10

Math

All topics

Quadratic Equations

Which of the following is not a quadratic equation

- $x−2x3 =5$
- $4x−85 =x_{2}$
- $x+x1 =9$
- $4x−3x2 =4x_{2}$

$∴$ It cannot be quadratic equation.

(D) $4x−3x2 =4x_{2}$

$⇒4x×3x−2=4x_{2}×3x$

$⇒12x_{2}−2=12x_{3}$

It is a cubic polynomial.