Consider the division expression 7 1/2 ÷ 2. Select two multiplication equations that correspond to this division expression. A: 2 x ? = 7 1/2
B: 7 1/2 x ? = 2
C: 2 x 7 1/2 = ?
D: ? x 7 1/2 = 2
E: ? x 2 = 7 1/2

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!

exactly you go it

step-by-step explanation: