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Mister
Mathematics
31 January, 16:35
Factor the algebraic expression 27a+21
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Yazmin Faulkner
31 January, 16:51
0
We know that we can do
ab+ac=a (b+c)
so find common factor
factor them
27a=a times 3 times 3 times 3
21=3 times 7
common factor=3
3=a
27a/3=9a
21/3=7
so now we have
(3) 9a + (3) 7=3 (9a+7)
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