Asked by GABRIELLA

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

A. (3x + 7)(3x − 7)

B. (9x − 7)(9x − 7)

C. (3x + 7)(3x + 7)

D. (9x + 7)(9x + 7)

HELP PLEASE DON'T UNDERSTAND
Answered by Steve
since the 1st and last are perfect squares, look for

(3x+7)^2 = 9x^2+42x+49
Answered by GABRIELLA
A. OR C. ?
Answered by Steve
HUH? I told you which one. See any minus signs anywhere?
Answered by GABIELLA
oh thank you Steve and monalisa
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