krissy25
krissy25
29-11-2016
Mathematics
contestada
I am confused on how to do this
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Amz18
Amz18
29-11-2016
so, u would start by expanding the bracket and ignoring the 2 at the moment.
(x+9)(x+9)= x^2-18x+81(using the foil method!
Then u would put 2 at the front to get:
2(x^2+18x+81)
= 2x^2+36x+162
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