SOLUTION: what is the function form of 5a^2 - 2ab -16b^2

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Question 263169: what is the function form of
5a^2 - 2ab -16b^2
Answer by palanisamy(496) About Me  (Show Source):
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5a^2 - 2ab -16b^2= 5a^2 -10ab+8ab -16b^2
= 5a(a-2b)+8b(a-2b)
= (a-2b)(5a+8b)