Which of the following are quadratic equations in x?

(x + 2)^{3} = x^{3} – 8

The given equation is a quadratic equation.

Explanation Given

On getting reduced it becomes

=

Now, using

where a = 6, b = 12, c = 16

It is in the form (a ≠ 0, a, b, c are real numbers)

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