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PLEASE HELP ME GET THESE! Factor: 81m^2 - 90m + 25 possible answers: A. (9m + 5)^2 C. (9m - 5)^2 D. (9m + 5)(9m -5)

PLEASE HELP ME GET THESE! Factor: 81m^2 - 90m + 25 possible answers: A. (9m + 5)^2 C. (9m - 5)^2 D. (9m + 5)(9m -5)
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PLEASE HELP ME GET THESE!

Factor: 81m^2 - 90m + 25

possible answers:

A. (9m + 5)^2
C. (9m - 5)^2
D. (9m + 5)(9m -5)

User Ethan Malloy
by
7.7k points

1 Answer

2 votes
note that sqrt81 = 9 and sqrt 25 = 5 or -5 and -90 = -45 - 45 so we can write

(9m - 5)(9m - 5)

= (9m - 5)^2

Its B


User Maria Jane
by
7.2k points
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