neyssa83
09.12.2020 •
Mathematics
) Emma already owns 8 hair bands, and additional hair bands are priced at 3 for a dollar.
How much money does Emma need to spend on new hair bands in order to own a total of
47 hair bands?
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Ответ:
The answer is b^2*(7b^4-4)^2
Step-by-step explanation: What you want to do is subtract 7b^5 from 7b^5 and you get 7b^4. Now that you've done that, you bring down the 2 b's you subtracted. Next, you're left with the 2 4'bs. What you want to do is subtract 4b from 4b, and your left with just 4.