Question

Desarrolla los siguientes productos


(3x-5) (2x+1)

(m-3+n) (m-3-n)

(x-2 al cubo)

Answer 1

(3x-5)(2x+1)=
3x(2x+1)-5(2x+1)=
6x^2+3x-10x-5=
6x^2-7x-5

(m-3+n)(m-3-n)=
m(m-3-n)-3(m-3-n)+n(m-3-n)=
m^2-3m-mn-3m+9-3n+mn-3n-n^2=
m^3-6m-6n+9-n^2

(x-2)^3=
(x-2)(x^2-4x+4)=
x(x^2-4x+4)-2(x^2-4x+4)=
x^3-4x^2+4x-2x^2+8x-8=
x^3-6x^2+12x-8