Question

Choose the correct simplification of the expression (-2x + 6y)(4x - 6y).

A. 8x^2 + 36xy - 36y^2

B. -8x^2 - 36xy + 36y^2

C. -8x^2 + 36xy - 36y^2

D. -8x^2 + 12xy - 36y^2

Answer 1

i know its A or C, but i forgot how to figure out the x and y by themselves sorry :(

Answer 2

Are you familiar with FOIL?
\(\color{red}{\text{FOIL}}\)
\(\color{red}{\text{F}}\text{oil}\)
\(\color{red}{\text{O}}\text{uter}\)
\(\color{red}{\text{I}}\text{nner}\)
\(\color{red}{\text{L}}\text{ast}\)

Answer 3

\((ax+b)(cx+d)=acx^2+adx+bcx+bd\)

Answer 4

thats what it was! haha i couldnt remember. so it would be C