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When do you use the difference of squares?

 Oct 17, 2018
 #1
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When do you use the difference of squares?

When you hae a square expression like   16y^2  and another square expression like   9x^2

You are finding the difference between them    16y^2  -  9x^2

And you want to factorize the expression. That means one expression   multiplied by another expression.

 

\(\sqrt{16y^2}=4y\\ \sqrt{9x^2}=3x\\ 16y^2-9x^2=(4y+3x)(4y-3x)\)

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 Oct 17, 2018
 #2
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Thank you!!

Guest Oct 17, 2018

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