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sue101
 2 years ago
Best ResponseYou've already chosen the best response.1(4a^5/7b^4) * (2b^2/2a^4)

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Rewrite like this: \[\frac{4a^5 \dot\ 2b^2}{2a^4 \dot\ 7b^4}\]

sue101
 2 years ago
Best ResponseYou've already chosen the best response.1do i just multiply accross?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Or you can work with each separately by rewriting like this: \[\frac{4}{2} \dot\ \frac{a^5}{a^4} \dot\ \frac{2}{7} \dot\ \frac{b^2}{b^4}\]

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1You already know how to reduce the numerical fractions.

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1You know that 4/2 = 2. You also know that 2/7 is already in simplest form and cannot be reduced any further

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1So for the numbers, you are just left with \[2 \times \frac{2}{7} = \frac{4}{7}\]

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1For the variables, you have to use this rule: \[\frac{a^y}{a^x} = a^{y  x}, y > x\] \[\frac{b^x}{b^y} = \frac{1}{b^{yx}}, x<y\]

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1So \[\frac{a^5}{a^4} = a^{5  4} = a^1 = a\] \[\frac{b^2}{b^4} = \frac{1}{b^{42}} = \frac{1}{b^2}\]

sue101
 2 years ago
Best ResponseYou've already chosen the best response.1thes are my multiple choice answers: 4a^9/7b^^6 4a/7b^2 7b^2/4a 4/7a^9b^6

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1\[\frac{4}{7} \times a \times \frac{1}{b^2} = \frac{4a}{7b^2}\]

sue101
 2 years ago
Best ResponseYou've already chosen the best response.1alirght so B? Thanks! <3

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1You should learn how to do these on your own.
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