Posted by Chris on Thursday, August 16, 2012 at 1:56pm.
1. -9^2 = -(9^2) = -81
2. -10 x^7 y^-2
3. a^3 b^-6
4. (7 x^-1 y^-4)^-2 = 1/49 x^2 y^8
5. 7.45*10^-5
6. 9,300,000
7. 3√-27 = 3√9√3 i = 9√3 i
8. √(25a^2) = 5a (note the "-" sign gets lost)
9. 2 x^2 y √15x
10. 5x
As usual, check my math. If something's not clear, come on back.
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