Question

Solve this and check whether it is a quadratic equation or not (4x+5x)=(x²+5)-2​

Answer 1

(4x+5x)=(x²+5)-2

$9x = {x}^{2} + 5 - 2 \\ {x}^{2} - 9x - 2 = 0$

Yes, this is a quadratic equation.