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Paha777 [63]
3 years ago
14

Factor the expression.

Mathematics
2 answers:
grigory [225]3 years ago
8 0
Hey!

First, let's write the problem,
4r^2-64
Factor out the common term, which is 4,
=4\left(r^2-16\right)
Then, let's factor this part: r^2-16
We are going to factor it using the difference of squares rule.
=\left(r+4\right)\left(r-4\right)
Our final factored answer would be,
=4\left(r+4\right)\left(r-4\right)

Thanks!
-TetraFish
iogann1982 [59]3 years ago
6 0
4r^2-64
4(r^2-16)
4(r+4)(r-4)
First factor out the gcf. Because (r^2-16) has perfect squares, you can factor it out one more time.
Final answer: D
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