possumsonmeth69 possumsonmeth69

13-05-2022
Mathematics

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the dimensions of a rectangle can be represented by the expressions (x+7) and (x-3). if the area of the rectangle is 75 square feet, find the value of x.

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Markoxmara Markoxmara

13-05-2022

Answer:

Step-by-step explanation:

Area of rectangle is b*h

so

a = (x-3)(x+7)

75 = (x-3)(x+7)

75 = x²+4x-21

0 = x²+4x-96

(x+12)(x-8)=0

x = -12, or x = 8

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