Benji and Joel are raising money for their class trip by selling gift wrapping paper. Benji raises $15 by selling 4 rolls of red
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Answer:
Step-by-step explanation:
We first rationalize the denominator. This means we multiply the numerator and denominator by a factor that will make the denominator a whole number.
Our denominator is ; this can also be written as
.
For 9 to be a whole number, its exponent must be a whole number. We want to add 2/3 to the exponent of 9 on the bottom; this means we multiply by :
On the numerator, this gives us:
6(9^(2/3))-3(6^(1/3))(9^(2/3))
=
On the denominator, we will have:
(9^(1/3))(9^(2/3)) = 9^(3/3) = 9^1 = 9
This gives us: