Question

factor this polynomial completely${x}^{2} - x - 20$

Answer 1

Explanation

Given the expression

$x^2-x-20$

Therefore;

$\begin{gathered} x^2-x-20 \\ =x^2-5x+4x-20 \\ =x(x-5)+4(x-5) \\ =(x+4)(x-5) \end{gathered}$

Answer:

$(x+4)(x-5)$