kayannahy kayannahy

14-12-2017
Mathematics

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Using Pascal’s triangle expand (q+3r)^2

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Аноним Аноним

14-12-2017

The coefficients are 1 2 1
so the expansion is

q^2 + 2q(3r)(+ (3r)^2

= q^2 + 6qr + 9r^2

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