Respuesta :
(−7n)(n−1)+n2
=(−7n)(n)+(−7n)(−1)+n2
=−7n2+7n+n2
=−7n2+7n+n2
=(−7n2+n2)+(7n)
=−6n2+7n
Hope this helps!
=(−7n)(n)+(−7n)(−1)+n2
=−7n2+7n+n2
=−7n2+7n+n2
=(−7n2+n2)+(7n)
=−6n2+7n
Hope this helps!