Question

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

STEP BY STEP EXPLANATION PLZ ANSWER...,,,
IF ANYONE GAVE ONE WORD ANS OR NO EXPLANATION I'LL REPORT U....​

Answer 1

Answer:

The following is not a quadratic equation

Step-by-step explanation:

given: (x + 2)³ = 2x (x² - 1)

⇒ x³ + 8 + 12x + 6x² = 2x³ - 2x

⇒ x³ - 2x³ + 6x² + 12x + 2x + 8 = 0

⇒ -x³ + 6x² + 14x + 8 = 0  

               OR

⇒ x³ - 6x² - 14x - 8 = 0

∴ the following is not a quadratic equation because the highest power in the equation is 3 and not 2

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Answer 2

Answer:

On solving the equation, it occurs in form ax²+bx+c, thus it is a quadratic equation

Step-by-step explanation:

Refer to the attachment

Please let me know in case it is incorrect.