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OpenStudy (anonymous):
Find the product of (3x + 7y)(3x − 7y).
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OpenStudy (anonymous):
You going to want to use the distributive property for this one. or FOIL as it is usually called in classrooms.
OpenStudy (anonymous):
3x(3x)+(3x)(-7y)+(7y)(3x)+(7y)(-7y)
OpenStudy (anonymous):
(3x+7y)(3x-7y) by formula,(a+b)(a-b)=a*a-b*b (3x*3x)-(7y*7y)=9x to the power 2-49y to the power 2
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