Упростите выражение:
1)√a-1/√b-1/√ab+1=√a²b -√a -1 +√ab /√ab = =(√a²b+√ab)-(√a+1) /√ab=√ab(√a+1)-(√a+1) /√ab=(√a+1)(√ab-1) /√ab 2)1-√a /a√b=a√b-√a /a√b=√a(√ab-1) /a√b 3)(√a+1)(√ab-1) /√ab * a√b / √a(√ab-1)=(√a+1)*a√b / √a²b=√a+1