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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)
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Feb 2, 2018
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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)
Mathematics
high-school
Ethan Malloy
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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
Maria Jane
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Feb 9, 2018
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