Multiply using the FOIL method.
-(11 + x)(11 + x)
A) $x ^ { 2 } + 22 x + 121$
B) $x ^ { 2 } + 21 x + 121$
C) $x ^ { 2 } + 22 x + 22$
D) $x ^ { 2 } + 121 x + 22$

Question

Quizplus · Accepted Answer

The FOIL method stands for First, Outer, Inner, Last. Applying it to $(11 + x)(11 + x)$, we get: First: $11 \cdot 11 = 121$, Outer: $11 \cdot x = 11x$, Inner: $x \cdot 11 = 11x$, Last: $x \cdot x = x^2$. Adding these together: $x^2 + 11x + 11x + 121 = x^2 + 22x + 121$.

Multiply Using the FOIL Method x2+22x+121x ^ { 2 } + 22 x + 121x2+22x+121

Multiply Using the FOIL Method $x ^ { 2 } + 22 x + 121$