Simplify.
Remove all perfect squares from inside the square roots. Assume y and z are positive.
√75yz^2

Step-by-step explanation:

First, you can break it up:   sqrt 75,  sqrt y,  sqrt z^2

Then, you can sq root all of it:

- sqrt z^2 is just z

- sqrt y stays the same

- sqrt 75 can be broken into sqrt 25 * sqrt3

           - That would equal to 5 sqrt 3

After all that, combine everything:

5z sqrt 3y

step-by-step explanation:

if you meant, "on the way from (3, 2) to (3, 14):

x does not change; y increases by 12.

ensure that you have copied down this problem correctly.   .

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!