The length of a rectangle is four times as long as its breadth.If the length is 8 cm shorter and the breadth is 4 cm longer, a square will be formed.What is the area of the rectangle ?
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Answer:
l = 4x
b = x
l - 8 = 4x - 8
b + 4 = x + 4
area of rectangle = (4x - 8) * (x + 4)
4x² + 16x - 8x - 24
(4x² + 8x - 24) cm ²
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