20. Choose the correct sum of the expression:
(6x - 2y - 5) + (9y + 8x)

=14x+7y−5

Step-by-step explanation:

Let's simplify step-by-step.

6x−2y−5+9y+8x

=6x+−2y+−5+9y+8x

Combine Like Terms:

=6x+−2y+−5+9y+8x

=(6x+8x)+(−2y+9y)+(−5)

=14x+7y+−5

=14x+7y−5

14x+7y-5

Step-by-step explanation:

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation:

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!