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-49x^2 +16 factor completely
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2 votes
-49x^2 +16 factor completely

User Torres
by
8.5k points

2 Answers

3 votes
(-7x+4)(7x+4)
-49x^2-28x+28x+16
User Adam Jurczyk
by
8.2k points
0 votes
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)
User Omeralper
by
7.4k points
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