Question

Ejercicios resueltos de Binomio de suma al cuadrado , .

Answer 1

$(a+b)^2= \\ (a)^2+2(a)(b)+(b)^2= \\ a^2+2ab+b^2 \\ \\ (20c+5)^2= \\ (20c)^2+2(20c)(5)+(5)^2= \\ 400c^2+200c+25 \\ \\ (3d+x)^2= \\ (3d)^2+2(3d)(x)+(x)^2= \\ 9d^2+6dx+x^2$