Evaluate
52
25
52 x 57
59
(5/2)-3
(2/5)3
44/42
42
(52)3
56
120
1
a2 x a3
a5
x-2/y-4
y4/x2
x7 / x4
x3
(x2)5
x10
2x0
2
r3 x t2 x r7 x t3
r10t5
9-2
1/92
55/53
52
(xy)3
x3y3
(-1)215
-1
(x2y5)(x3y7)
x5y12
2x-3/y-1
2y/x3
x2y4 ÷ xy3
xy
(x2y4)3
x6y12
-62
-36
(x5)(x-2)
x3
x2/y-2
x2y2
x10 ÷ x-3
x13
(xy2)4
x4y8