Question

check whether the following are quadratic equation :
(x+2)³=2x(x²-1)​

Answer 1

Step-by-step explanation:

x^3 + 2^3 + 3 × x^2 × 2 + 3× x × 2^2 = 2x^3 - 2x

x^3 + 8 + 6x^2 + 12x = 2x^3 - 2x

x^3 - 2x^3 + 6x^2 +12x + 2x + 8 =0

-x^3 +6x^2 + 14x + 8 = 0

no , it is not a quadratic equation