Which quadratic function has one real solution? 0 = 2(x + 7)(x - 5)
5 0 = (x – 3)(– 3)
0 = 2.4(x - 2)(x + 2)
0 = {(x - 2)(x - 1)

b.) (x-3)(x-3)

Step-by-step explanation:

i got it right

cut 138 centimeters off

step-by-step explanation:

250-112 = 138

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!