What number can be multiplied to the equation to make it so the x's are eliminated. - 8x + 2y = 8
4x + 3y = -4

-1

Step-by-step explanation:

-8(-1) + 2y = 8

8 + 2y = 8

2y = 0

4(-1) + 3y = -4

-4 + 3y = -4

3y = 0

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!