Question

[（-3x的4次方×y²）²]²÷[（-2xy）²]等于多少？？

还有几道题：（1）（-6分之1×a·b的4次方）³÷（-6分之1×a·b的4次方）²×b的5次方
（2）（6·a的5次方·b的6次方·c的4次方）÷（-3·a²·b³c）÷（2·a³·b³·c²）
以上三道题都是有关于单项式除以单项式的题目，请大师们帮我解答解答，谢谢了

Answer 1

[（-3x的4次方×y²）²]²÷[（-2xy）²]

=（-3x的4次方×y²）⁴÷4x²y²
=81x^16y^8÷4x²y²
=81／4x^14y^6

（-6分之1×a·b的4次方）³÷（-6分之1×a·b的4次方）²×b的5次方

=﹣1／216a^3b^12÷1／36a^2b^8*b^5
=﹣1／6ab^4*b^5
=﹣1／6ab^9

（6·a的5次方·b的6次方·c的4次方）÷（-3·a²·b³c）÷（2·a³·b³·c²）

=6·a的5次方·b的6次方·c的4次方÷[（-3·a²·b³c）*（2·a³·b³·c²）]
=6·a的5次方·b的6次方·c的4次方÷(﹣6a^5b^6c^3)
=﹣c

Answer 2

{ [ -3(x^4) y" ]" }" / [ ( -2xy )" ]
= [ 9 (x^8) (y^4) ]" / [ 4 x" y" ]
= [ 81 (x^16) (y^8) ] / [ 4 x" y" ]
= 81 (x^14) (y^6) / 4

[ (-1/6) a (b^4) ]^3 / [ (-1/6) a (b^4) ]" X (b^5)
= [ (-1/6) a (b^4) ] X (b^5)
= (-1/6) a (b^9)

[ 6 (a^5) (b^6) (c^4) ] / [ -3 a" (b^3) c ] / [ 2 (a^3) (b^3) c" ]
= [ 6 (a^5) (b^6) (c^4) ] / [ -6 (a^5) (b^6) (c^3) ]
= -c