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24-04-2017
Mathematics

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Which expression represents the following situation ? multiply the sum of.
a.number and 3 by the difference of 8 and the number

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24-04-2017

The sum of a number and three is (n+3)

The difference of 8 and the number is (8-n)

And if we multiply them we get:

(n+3)(8-n) if you wanted it expanded...

8n-n^2+24-3n

-n^2+5n+24

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