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13-03-2017
Mathematics

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Factor completely and check mentally. 3mn^2+3mn

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13-03-2017

ab+ac=a(b+c)
a is comon factor

find common factors
factor each
3mn^2=3*m*n*n
3mn=3*m*n
common factor is 3*m*n

3mn(n)+3mn(1)=3mn(n+1)

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