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Negative Exponent Expressions

woody61

New member
Joined
Jan 14, 2010
Messages
1
Would you please help with these 2 questions from my freshman high school algebra I homework? Simplify these expressions:
1) 7ab (to the negative exponent of 2) divided by 3w. I got this far.
= 7a times (b to the negative exponent of 2) divided by 3w
= 7a times (1/b squared) divided by 3w
= 7a over b squared divided by 3w
= ? (As far as I got)

2) 7s/5t (to the negative exponent of 3)

Please help! Thanks!
 

wjm11

Senior Member
Joined
Nov 13, 2004
Messages
1,417
Would you please help with these 2 questions from my freshman high school algebra I homework? Simplify these expressions:
1) 7ab (to the negative exponent of 2) divided by 3w. I got this far.
= 7a times (b to the negative exponent of 2) divided by 3w
= 7a times (1/b squared) divided by 3w
= 7a over b squared divided by 3w
= ? (As far as I got)

2) 7s/5t (to the negative exponent of 3)

Please help! Thanks!
(7ab^(-2))/(3w) = (7a)(1/b^2)(1/3w) = (7a)/(3wb^2)

(7s/5t)^(-3) = (5t/7s)^(3) = ((5^3)(t^3))/((7^3)(s^3)) = (125t^3)/(343s^3)
 
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