Question

Factor completely: 9x^2 + 42x + 49

Answer 1

Use the (a + b)^2 identity.
(3x)^2 + 2(3x)(7) + 7^2
=(3x + 7)^2

Answer 2

(3x+7)(3x+7)

Answer 3

(3x + 7)(3x + 7)








(3x + 7)(3x - 7)








(9x - 7)(9x - 7)








(9x + 7)(9x + 7)

Answer 4

First option.

Answer 5

(3x-7)^2

Answer 6

\[\frac{\left( 9x+21 \right)\left( 9x+21 \right)}{9}=\left( 3x+7 \right)^{2}\]

Answer 7

And Tributized, you made a mistake.

Answer 8

i know :(