Tolong ya….
(a+b)^3=a^3+3a^2b+3ab^2+b^3
=(a+b)(a+b)(a+b)
=(a^2+2ab+b^2)(a+b)
={a^3+2a^2b+ab^2}+
{a^2b+2ab^2+b^3}
=a^3+3a^2b+3ab^2+b^3
(2x+y)^3=8x^3+3.4x^2.y+3.2x.y^2+y^3
=8x^3+12x^2y+6xy^2+y^3
Demikian semoga membantu dan bermanfaat!
Tolong ya….
(a+b)^3=a^3+3a^2b+3ab^2+b^3
=(a+b)(a+b)(a+b)
=(a^2+2ab+b^2)(a+b)
={a^3+2a^2b+ab^2}+
{a^2b+2ab^2+b^3}
=a^3+3a^2b+3ab^2+b^3
(2x+y)^3=8x^3+3.4x^2.y+3.2x.y^2+y^3
=8x^3+12x^2y+6xy^2+y^3
Demikian semoga membantu dan bermanfaat!