Question

$\frac{8}{7} {a}^{2} - \frac{3}{10} {a}^{3}b + \frac{1}{4} {b}^{2} + \frac{2}{5} b {a}^{3} - \frac{1}{7} {a}^{2}$
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Answer 1

La respuesta es 1/10(20a2+2a3b+5b2)