Question

Resolva:$( \frac{3}{4} x+ \frac{2}{5}) ^{2}$

Answer 1

$( \frac{3}{4}x + \frac{3}{5} )^2 \\ \\ =( \frac{3}{4}x + \frac{3}{5} ).( \frac{3}{4}x + \frac{3}{5} )\\ \\ = \frac{9}{16} x^2 + \frac{6}{20} x+ \frac{6}{20}x + \frac{4}{25} \\ \\ =\boxed{\boxed{ \frac{9}{16} x^2 + \frac{12}{20} x + \frac{4}{25} }}$


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Gannicus
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