Question

G(X) =
Check whether (x+3)³=x³-8 is a quadratic eqation

Answer 1

Answer:

Yes, it is

Step-by-step explanation:

(x+3)³ = x³-8

x³+3³+3.3.x(x+3) = x³-8   ...... [Using the identity (a+b)³=a³+b³+3ab(a+b) ]

x³+27+9x² + 27x =  x³-8  ...... (Cancelling x³ from both the sides)

9x² + 27x + 27 = -8

9x² + 27x + 35 = 0

which is a quadratic equation