Find the difference of functions s and r shown below. r(x) = –x² + 3x s(x) = 2x + 1 (s – r)(x) = -x^2+3x-2x+1 (-x^2+3x)-2x+1 (2x+1)-(x^2 + 3x) 2x+1-x^2+3x

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