Question

productos notables
ayudenme
(2x+y)²=
(3x+2y)(3x-2y)=
(x-3y)³=
(x-y)²=
(3x-y)³=

Answer 1

(2x+y)^2=4x^2+4xy+y^2
(3x+2y)(3x-2y)=9x^2-4y^2
(x-3y)^3=x^3-3x^2(3y)+3(x)(3y)^2-27y^3
=x^3-9x^2y+27xy^2-27y^3
(x-y)^2=x^2-2xy+y^2
(3x-y)^3=27x^3-3(3x)^2y+3(3x)(y)^2-y^3
=27x^3-27x^2y+9xy^2-y^3