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10-04-2021
Mathematics

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The length of a rectangle is 9 cm longer than the width. If the area of the rectangle is 70 cm2, what is the width of the rectangle?

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SMARTIEYY SMARTIEYY

10-04-2021

the width is 5

w(w+9)=70
then simplify to w^2+9w=70
then set it to 0

w^2+9w-70=0

then factor

(w-5)(w+14)=0

solutions are 5,-14

the width is 5 due to context

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