Question

（1）6a的﹣3次方b的﹣2次方分之a的﹣2次方b的﹣3次方(﹣3a的﹣1次方b的2次方）

Answer 1

(a^-2b^-3)(-3a^-1b^2)/(6a^-3b^-2)
=(-3/6)a^[-2-1-(-3)]b^[-3+2-(-2)]
=-(1/2)a^0b^1
=-(1/2)b

追问

【2(x+y)的﹣1次方（x-y）】的﹣2次方分之【4（x-y）的2次方（x+y）的﹣2次方】的2次方

追答

[4(x-y)^2(x+y)^-2]^2/[2(x+y)^-1(x-y)]^-2
=[16(x-y)^4(x+y)^-4]/[1/4(x+y)^2(x-y)^-2]
=64(x-y)^6(x+y)^-6