136k views
1 vote
Choose the correct simplification of the expression (−2x + 8y)(9x − 3y).

−18x2 + 78xy − 24y2
18x2 + 78xy − 24y2
−18x2 − 78xy + 24y2
−18x2 + 72xy − 24y2

2 Answers

2 votes

Answer:

The answer is A I just took the test

Step-by-step explanation:

User Michael Bruce
by
8.0k points
4 votes
For these kinds of expressions use FOIL (first, outside, inside, last).

-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2

Now combine them all:

-18x^2 + 78xy - 24y^2
User Gatonito
by
8.4k points