Asked by Anonymous
Question #1
Factor this expression completely
x2 - 9
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Factor this expression completely
x2 - 9
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Answers
Answered by
MathMate
Rewrite the expression as
x²-3²
and apply the identity:
(x²-y²)=(x+y)(x-y)
x²-3²
and apply the identity:
(x²-y²)=(x+y)(x-y)
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