The perimeter of rectangle is 28x³ + 16x² + 4 .One of its side is 8x²+4x . Find the other side.
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perimeter of the rectangle=2(one side+other side)
28x^3+16x^2+4=2(8x^2+4x+other side)
=> 4(7x^3+4x^2+1)=4(4x^2+2+other side)
=> 7x^3+4x^2+1=4x^2+2+other side
=> other side =7x^3+4x^2+1-4x^2-2
=> other side =7x^3-1
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Answer:
(14x)^3+4x+2.
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