Posted by **mysterychicken** on Friday, April 2, 2010 at 12:42pm.

33. Simplify a^5/a^3

a^2?

Because I think when it's like that you subtract the two powers.

Simplify sqrt of a^2

How do you do this?

44. Solve 1/2 * [3/4 + 1/2]

1/2*5/4

5/8?

47. Solve 1/2*[3/4divided by 1/2]

3/4?

49. Solve sqrt of -100

a. sqrt of -100

b. -10

c. 10

d. No answer

C? I think C because I don't think there can be a negative inside a square root, but I'm not sure

- Algebra1 -
**bobpursley**, Friday, April 2, 2010 at 1:51pm
MC; sqrt of a^2 is a, by definition.

49. THe correct answer is 10sqrt(-1), or as some write it, 10i

a. is the best choice, but dumb.

47. yes.

44. yes

- Algebra1 -
**mysterychicken**, Friday, April 2, 2010 at 2:27pm
I'm not sure what you mean by the first one-33

- Algebra1 -
**bobpursley**, Friday, April 2, 2010 at 2:37pm
I mean: sqrt a^2= a by definition.

sqrt 16 = 4

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