Multiply using the FOIL method.
-$( b - 10 ) ( b + 2 )$
A) $2 b ^ { 2 } + 20$
B) $2 b - 20$
C) $b ^ { 2 } + 8 b + 20$
D) $b ^ { 2 } - 8 b - 20$

Question

Quizplus · Accepted Answer

The FOIL method involves multiplying the First, Outer, Inner, and Last terms: $b \times b = b^2$, $b \times 2 = 2b$, $-10 \times b = -10b$, and $-10 \times 2 = -20$. Combining these gives $b^2 + 2b - 10b - 20 = b^2 - 8b - 20$.

Multiply Using the FOIL Method (b−10)(b+2)( b - 10 ) ( b + 2 )(b−10)(b+2)

Multiply Using the FOIL Method $( b - 10 ) ( b + 2 )$