Question 1055821: The width of an 18-sq rectangle is 5cm shorter than twice the length please symbolize and solve the rectangles dimensions Answer by ikleyn(52778) (Show Source):
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The width of an 18-sq rectangle is 5 cm shorter than twice the length please symbolize and solve the rectangles dimensions
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W*L = 18.
W = 2L - 5.
====> (2L-5)*L = 18.
2L^2 - 5L - 18 = 0.
= = .
The only positive root is L = 4.5.
Answer. The dimensions of the rectangle are 4.5 cm and 2*4.5-5 = 4 cm.
