Question

Desenvolva: (6+5c)^2 + (6+5c).(6-5c)+(6-5c)^2​

Answer 1

Resposta:

108+25c^2

espero ter lhe ajudado

Answer 2

Resposta:

$\left(6+5c\right)^2+\left(6+5c\right)\left(6-5c\right)+\left(6-5c\right)^2\\\\36+60c+25c^2+\left(6+5c\right)\left(6-5c\right)+\left(6-5c\right)^2\\\\36+60c+25c^2+\left(6+5c\right)\left(6-5c\right)+36-60c+25c^2\\\\36+60c+25c^2+36-25c^2+36-60c+25c^2\\\\25c^2+108$