SOLUTION: rectangle has a length of x + 5 and width of x - 5 and has an area of 56 square units. Find width and length of rectangle.
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Question 248685: rectangle has a length of x + 5 and width of x - 5 and has an area of 56 square units. Find width and length of rectangle.
Answer by dabanfield(803) (Show Source): You can put this solution on YOUR website!
rectangle has a length of x + 5 and width of x - 5 and has an area of 56 square units. Find width and length of rectangle
(x+5)*(x-5) = 56
x^2 - 25 - 56 = 0
x^2 - 81 = 0
(x-9)*(x+9) = 0
Solve for x and calculate the length (x+%) and width (x-5).
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