Negative exponents
y-3
1/y3
32 * 34
36
x5 * (x2)-6
1/x7
x5/x3
x2
(x2y-3)4
x8/y12
1/7-2
49
(6d-3)(-7d8)
-42d5
(x4)10
x40
(-4a2b4)/(8ab)
-1ab3/2
(2x-2y3) * (3x4y-1)2
18x6y
c-6d-2
1/c6d2
n-5 * n-13
1/n18
(4a3)2
16a6
2x2y6
(a3b-2)2/a-4b5
a10/b9
k0n-4m
m/n4
1/(e-4)(e9)
1/e5
(9/8)-3
512/729
(42x9y-5)/(7x-2y-3)
(6x11)/(y2)
(25)3 * (x3y2)-4
215/x12y8
212/z4
a * a* b5 * a2 * b
a4 * b6
(7/a9)3
343/a27
a7b8
10(xy)6 * (3x2y3)-4
10/(81x2y6)