Question

$(b + c) {?}^{2}$
$(x + 7) {?}^{2}$
$(2x + 6) {?}^{2}$
$(5 + 2m) {?}^{2}$
$(x + 5) {?}^{2}$
Me ajudem por favoorr

Answer 1

O quadrado da soma de dois termos

$(a+b)^2 = a^2+2ab+b^2$

Respostas:

$(b+c)^2= b^2+2bc+c^2\\\\(x+7)^2=x^2+14x+49\\\\(2x+6)^2 = 4x^2+24x+36\\\\(5+2m)^2 = 4m^2+20m+25\\\\(x+5)^2 = x^2+10x+25$