1.

The length of a rectangle is 2 more than its width. The area of the rectangle is 80. Find length and breadth.

Answer»

Let x be the width, then length = x + 2

x (x + 2) = 80

x2 + 2x = 80

x2 + 2x + 1 = 80 + 1

(x + 1)2 = 81

x + 1 = 9 

x = 8 

length = 10 

width = 8



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