(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)
答
(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