Posted by **Chris** on Thursday, August 16, 2012 at 1:56pm.

HELP?!

1.-9^2

2.(5x^9y)(-2x^-2y^-3)

3.(a^1b^-2) / (a^-2b^4)

4.(7x^-1/y^4)^-2

Scientific notation:

5)

.0000745

Decimal Form:

6)

9.3*10^6

Solve:

7.3√-27

8.√(-5a)^2

Simplify:

9.√60x^5y^2

10.√75x^3 / √3x

- Math -
**Steve**, Thursday, August 16, 2012 at 4:51pm
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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