(a+b)除以(a^2-ab+b^2)*(a^3+b^3)

问题描述:

(a+b)除以(a^2-ab+b^2)*(a^3+b^3)

(a+b)÷(a^2-ab+b^2)*(a^3+b^3)
=(a+b)(a+b)(a^2-ab+b^2)÷(a^2-ab+b^2)
=(a+b)^2
=a^2+2ab+b^2