Question

(x+2)²+(x-2).(x+2)+(x+2)²​

Answer 1

(x+2) 2 +(x+2)×(x−2)+(x−2) 2

(x 2 +4x+4)+(x 2−4)+(x 2 −4x+4)

x 2+x 2+x 2+4x−4x+4−4+4

resposta final: 3x2 +4