Simplify the expression:

题目

Simplify the expression:
1.(6ax-2a)/(b(ab+b^2)) × (b^2 〖(a+b)〗^2)/(3ax-a)
2.(a^2 b+ab^2)/(〖3(x〗^2)+3xy) ÷ (ab+a^2)/(x^2 y)
3.(2〖p-q〗^2)/(3q^2) × ((p^2)q)/(pq-x^2) ÷ (2q-2p)/(-6)

答案

1,原式=2a(3x-1)/[b^2(a+b)]*b^2(a+b)^2/a(3x-1) 消项=2(a+b)2,原式=ab(a+b)/3x(x+y)*x^2y/a(a+b) 到底(3x)^2还是3x^2不是很清楚=by/3(x+y)3,原式=2(p-q)^2/3q^2*p^2q/[1/(pq)^2]*3/(p-q)=(p-q)/q^2*(p^2)q*(pq)^2*2...