The length of rectangle is 8cm longer than its width a square of side x centimeters is cut out of it if x centimeters is half of rectangle then remaining area in square centimeters is
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Given, x=1/2b⇒b=2x
Length of rectangle=8+b
l=8+2x
Area of rectangle=l×b
=(8+2x)2x
=4x^2+16x
Area of square=x^2
Area of remaining part= Area of rectangle− Area of square
=4x^2+16x-x^2
=3x^2+16x
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