Solve the system of equations. 5x - 7y = 58
y = -x + 2
x=
y=
please help me out and if you can please explain how to do it. :)​

what is the original number? you forgot to add it.

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!

the eight graders whould be the answer

step-by-step explanation: could you give me 5 stars