Question

cuánto es (3a²b-6ab)(7a-5+7b)​

Answer 1

Respuesta:

=21a3b+21a2b2−57a2b−42ab2+30ab

Explicación paso a paso:

Simplificar

(3a2b−6ab)(7a−5+7b)

=(3a2b+−6ab)(7a+−5+7b)

=(3a2b)(7a)+(3a2b)(−5)+(3a2b)(7b)+(−6ab)(7a)+(−6ab)(−5)+(−6ab)(7b)

=21a3b−15a2b+21a2b2−42a2b+30ab−42ab2

=21a3b+21a2b2−57a2b−42ab2+30ab