Question

calcular a seguinte expressao (3x+2)vezes(3x-2)+(x+2)²

Answer 1

Oiii

$(3x+2).(3x-2)+(x+2)^{2} (3x)^{2}-2^{2}+ x^{2} +2x . 2+2^{2} 3^{2} x^{2} - 2^{2} + x^{2} +4x+ 2^{2} 9x^{2}-4+x^{2}+4x +4 (9x^{2}+x^{2})+(-4+4)+4x \boxed{10x^{2}+4x}$