Question

factorizar y simplificar (x+y)(x-y)+3x(x+y)+(x+y)^

Answer 1

(x+y)(x-y)+3x(x+y)+(x+y)^ =
x^2-y^2+3x^2+3xy+x^2+2xy+y^2=
5x^2+5xy
Las formulas son:
(x+y)(x-y)=x^2-y^2
(x+y)^2=x^2+2xy+y^2
Suerte;)