Asked by sunny

factor:
-20x^2 + 5y^2

11 years ago

Answered by sunny

is it
-20x^2 + 5y^2
= -5(4x^2-y^2)

11 years ago

Answered by sunny

no the answer is
-5(2x-y)(2x+y)
^is that right??

11 years ago

Answered by Damon

Yes !!! You got it.
even the -1 * -1 = + 1 part

11 years ago

Answered by sunny

thankyou!

11 years ago

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