Write an expression in factored form for the area of the shaded portion of the figure. (In the figure, a = 3 and b = 5.)

Question

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Answer 1

From your figure: using area of triangle = (1/2)(base)(height)
area of shaded part = (1/2)(5/a)(x+b)(x+b) - (1/2)(5a)
leaving the simplification up to you