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OpenStudy (vanz):
find gcf 10x^2-90
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OpenStudy (anonymous):
is it 2*5*(x-3)(x+3)
OpenStudy (anonymous):
10x^2-90 =10(x^2-9) =10(x+3)(x-3) from the algebric formula a^2-b^2=(a+b)(a-b)
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