The quadratic expression x^2+7x+n can be factored as (x+g)(x+h) where n, g,h are integers. pod wrote that b could be equal to -18. eleanor wrote that n could equal 13. which student is correct?

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

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!