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Katyanochek1 [597]

4 years ago

14

The rectangle below has an area of x^2-16 square meters and a width of x+4 meters. What expression represents the length of the

rectangle?

1 answer:

max2010maxim [7]4 years ago

4 0

Area=LW
x^2-16=L(x+4)
remember difference of 2 perfect squares to factor x^2-16
(x-4)(x+4)=L(x+4)
divide both sides by (x+4)
x-4=L

legnth=x-4

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