(picture) factoring polynomials: gcf ! a b c d

5x^2 (2y +5)

Step-by-step explanation:

LEts write the factors for each term

10x^2y ------> 5*2*x*x*y

25x^2 -------> 5*5*x*x

common factors will be our greatest common factor

5 , x and x  are in common

so GCF is 5*x*x = 5x^2

Now we factor out 5x^2

5x^2 ( 2y +5)

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!

c.)

step-by-step explanation: