Below is Jon's work to simplify an expression. Line 1: 8 - 2(5 - 2x) - 6x Line 2: 6(5 - 2x) - 6x Line 3: 30 - 12x - 6x Line 4: 30 - 18x what is the first thing he does wrong

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

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!

t hope this

: