Question

out of the following
equation which one is not
a quadratic equation
a) x² + 4x = 11 + x ²
b) x ² = 400
C) 5x²=90
d)2C-?=7245​

Answer 1

Answer:

⇒ 4 x = 11 Thus, x2 + 4x = 11 + x2 is not a quadratic equation.