mstoria91 mstoria91

19-03-2017
Mathematics

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Simplifying (3+x) cubed

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ghanami ghanami

19-03-2017

Hello
by identité : (a+b)3 = a3 +b3 +3a²b +3b²a
(3+x) 3 = 27 + x3 +27x +9 x²
or : (3+x) 3 = (3+x)(3+x)².............

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