Question

expand (1/2a+1/3b+c)^2​

Answer 1

Answer:

$( \frac{1}{2} a + \frac{1}{3} b + c) ^{2} \\ = \frac{1}{4} {a}^{2} + \frac{1}{9} {b}^{2} + {c}^{2} + \frac{1}{18}ab + \frac{2}{3} bc + ac$

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