A computer manufacturing company would like to come up with a new laptop computer such that its monitor is 80 square inches smaller than the present ones.Suppose the length of tho monitor of the larger computer is 5 inches longer than its width and the area of the smaller computer is 70 square inches.What are the dimensions of the monitor of the larger computer?

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Answers

2014-08-03T17:47:55+08:00
Let L be the length of the larger computer W be the width of the larger comp. X be the smaller length Y be the smaller width Area of smaller = Area of larger - 80 L = 5 + W 70 = Area of larger - 80 Area of larger = 150 150 = (5 + W)(W) 0 = W^2 + 5W - 150 0 = (W + 15)(W - 10) W = 10 L = 15 10 × 15
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