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Kitty [74]
3 years ago
12

Find the product. Multiplication of the binomial.

Mathematics
1 answer:
AnnZ [28]3 years ago
6 0

We have, (2r+3)(3r^2+4r+5) or more generally,

(a+b)(c+d+e)=ac+ad+ae+bc+bd+be

So using that, we find,

(2r+3)(3r^2+4r+5)=6r^3+8r^2+10r+9r^2+12r+15, then collect terms with same exponent and get \boxed{6r^3+17r^2+22r+15}.

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Which equation could you use to solve for x in the proportion 4/5=9/x?
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