Question

$a {}^{2} (a + b) - 2a + b (a + b) + b {}^{2} (a + b)$
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Answer 1

Respuesta:

${a}^{3} + {a}^{2}b - 2a + ab + {b}^{2} + ab {}^{2} + {b}^{3}$

saludos