Question

Select the correct answer.What is the completely factored form of this polynomial?7x4 + 14x3 - 168x-

Answer 1

First, we have to factorize by common factors

$\begin{gathered} 7x^4+14x^3\text{ - }168x^2 \\ 7x^2(x^2+2x\text{ -}24) \end{gathered}$

So, until this point we have this Now let's factorize the polynomial inside the parenthesis

$7x^2(x+6)(x\text{ - }4)$

That would be the final expression. Option A is correct