1. ## exponent question

(2^a)^(b-1) = ?

(2^a)(2^(ab-1)) = ?

2. Originally Posted by noles2188

(2^a)^(b-1) = ?

(2^a)(2^(ab-1)) = ?
For the first one, recall that:

$(x^a)^b=x^{ab}$

That would yield $(2^a)^{b-1}=2^{a(b-1)}=2^{ab-a}$

For the second one, recall that:

$(x^a)(x^b)=x^{a+b}$

That would yield $(2^a)(2^{ab-1})=2^{a+ab-1}=2^{a(1+b)-1}$

3. noles... are you studying for mac1140 with dr.kutter exam 2 tomorrow?

4. no, i'm just doing some homework, and there were exponents, which i haven't done for a while