Exponents
                Simplify: (2yx3)3
8y3x9
Simplify: x-3/3y0
1/3x3
Simplify: (-2yx3)(4x3y2)
-8y3x6
xy / 3x2y-3
y4 / 3x
From his campsite, Miguel estimated he could see about 2,500 stars without a telescope. He read once that a certain galaxy has 5 x 1011 stars. How many times more stars does that galaxy contain than what Miguel estimates that he can see.
2 x 108
(2x-1)(-2x-2y2)
- 4y2 / x3