amynguyen336osyhb7 amynguyen336osyhb7

01-08-2017
Mathematics

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-49x^2 +16 factor completely

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eeverston eeverston

01-08-2017

(-7x+4)(7x+4)
-49x^2-28x+28x+16

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apologiabiology apologiabiology

01-08-2017

recognize the difference of 2 perfect squares

remember
a²-b²=(a-b)(a+b)
so

we can rearange them to look like this:
16-49x²
then show the squares
(4)²-(7x)²
then factor
(4-7x)(4+7x)

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