a²-ab/a²-ab+b² ÷ a²-b²/a³+b
1个回答
a²-ab/a²-ab+b² ÷ a²-b²/a³+b³
=a(a-b)/(a²-ab+b²)· (a+b)(a²-ab+b²)/(a-b)(a+b)
=a
相关问题
(a²-b²/b)²÷(a²+ab)²×(ab/b-a)²
a²+ab/ab-a²÷(a+b)÷ab/ab-a²
若a≠0,b≠0,求ab÷/ab/+a÷/a/+b÷/b/.
2)(a²+ab)/(a²-ab)÷(a+b)/(a-b)
(a^2-2ab)/(-ab+b^2)÷[a^2/(a-b)÷(2ab)/(2b-a)]
1.[a/(ab-b²)-b/(a²-ab)]÷[1+(a²+b²)/2ab],
计算:a2-2ab/-ab+b2÷(a2/a-b÷2ab/2b-a)
计算 [(a-b)(a+b)]²÷(a²-2ab+b²)-2ab
计算[4/(√a+√b)(√a -√b)+(√a+√b)/√ab(√b-√a]÷(√a-√b)/√ab,其中a=3,b=
1.(a²-b²)÷(a-b) 2.(a²+2ab+b²)²÷(-a-b)³