factor by grouping 12a^2-12ab-9b^2

factor by grouping
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4 Answers

 

12a^2 - 12ab - 9b^2

= 3(4a^2 - 4ab - 3b^2)

= 3(4a^2 - 6ab + 2ab - 3b^2)

= 3((4a^2 - 6ab) + (2ab - 3b^2))

= 3((2a)(2a - 3b) + b(2a - 3b))

= 3((2a + b)(2a - 3b))

= 3(2a + b)(2a - 3b)

by Level 1 User (220 points)
Grant thinks
by Level 1 User (140 points)
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