Multiply using the FOIL method.
-$( x + 9 ) \left( x ^ { 2 } + 2 \right)$
A) $9 x ^ { 2 } + x + 18$ 18
B) $x ^ { 2 } + 11 x + 18$
C) $x ^ { 3 } + 2 x ^ { 2 } + 9 x + 18$
D) $x ^ { 3 } + 9 x ^ { 2 } + 2 x + 18$

Question

Quizplus · Accepted Answer

The FOIL method involves multiplying each term in the first binomial by each term in the second binomial. The result is $x(x^2) + x(2) + 9(x^2) + 9(2) = x^3 + 2x + 9x^2 + 18$, which simplifies to $x^3 + 9x^2 + 2x + 18$.

Multiply Using the FOIL Method (x+9)(x2+2)( x + 9 ) \left( x ^ { 2 } + 2 \right)(x+9)(x2+2)

Multiply Using the FOIL Method $( x + 9 ) \left( x ^ { 2 } + 2 \right)$