Question

(3a5-7a3-8ab2). (-4a4b2)

Answer 1

Respuesta:

$=-32ab\left(-6a-16ab\right)$

Explicación paso a paso:

$\left(3a\cdot \:5-7a\cdot \:3-8ab\cdot \:2\right)\left(-4a\cdot \:4b\cdot \:2\right)\\\\=-\left(3a\cdot \:5-7a\cdot \:3-8ab\cdot \:2\right)\cdot \:4a\cdot \:4b\cdot \:2\\\\=-4\cdot \:4\cdot \:2ab\left(15a-7\cdot \:3a-8\cdot \:2ab\right)\\\\=-4\cdot \:4\cdot \:2ab\left(15a-21a-8\cdot \:2ab\right)\\\\=-4\cdot \:4\cdot \:2ab\left(15a-21a-16ab\right)\\\\=-4\cdot \:4\cdot \:2ab\left(-6a-16ab\right)\\\\=-32ab\left(-6a-16ab\right)$

espero que te ayude

#yoaprendi