Question

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

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

(x+2)³=2x(x²-1)

= x³+8 = 2x³-2x

= x³+8-2x³+2x = 0

= x³-2x³+2x+8 = 0

= -x³+2x+8 = 0

quadrative equation should be in form of "ax²+bx+c = 0"

since, "-x³=2x+8 = 0" not in form of  ax²+bx+c = 0

∴ "-x³=2x+8 = 0" is not quadrative equation