jennaboo514 jennaboo514

27-01-2017
Mathematics

contestada

What's the answer? I don't understand what it is askinh.

Whats the answer I dont understand what it is askinh class=

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noodles28 noodles28

27-01-2017

Area = width X length
So you need to factorise the quadratic having X - 40 as a factor.
(X-40)(X-90) when multiplied out gives you the total area
This means the length is X-90

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