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How to Factor 4x^2 -121
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1 vote
How to Factor 4x^2 -121

User Edam
by
8.1k points

1 Answer

4 votes
difference of 2 perfect squares
for
a^2-b^2=(a-b)(a+b)

so
(2x)^2-(11)^2=(2x-11)(2x+11)
User Dmitry Frenkel
by
7.9k points
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