Question

check whether the following are quadratic equation (x+2)^3=x^3-4​

Answer 1

Answer:

hope it will help you and sorry for the image

Answer 2

Answer:

( x + 2) ³ = x³ - 4

=> x³ + 2³ + 3.x².2 + 3.x.2² = x³ - 4

x³ will be cancelled from both sides.

=> 8 + 6x² + 12x = -4

=> 6x² + 12x + 8 + 4 = 0

=> 6x² - 12x + 12 = 0

clearly it is in the form 9f ax² + bx + c

so, it is a quadratic equation.