Factor completely.
-$$x ^ { 2 } - x - 20$$
A) $( x - 5 ) ( x + 5 )$
B) $( x + 5 ) ( x - 4 )$
C) $( x + 4 ) ( x - 5 )$
D) $( x + 1 ) ( x - 9 )$

Name: Factor completely. -\[x ^ { 2 } - x - 20\] A) $( x - 5 ) ( x + 5 )$ B) $( x + 5 ) ( x - 4 )$ C) $( x + 4 ) ( x - 5 )$ D) $( x + 1 ) ( x - 9 )$
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Question

Quizplus · Accepted Answer

The correct factorization of $x^2 - x - 20$ is $(x + 4)(x - 5)$ because when multiplied, it gives $x^2 - 5x + 4x - 20$, which simplifies to $x^2 - x - 20$.

Factor Completely x2−x−20x ^ { 2 } - x - 20x2−x−20

Factor Completely $x ^ { 2 } - x - 20$