An algebra problem by Razif FA

Algebra Level 2

x21x+1+(x+1)21x+2+(x+2)21x+3 \dfrac{x^2-1}{x+1} + \dfrac{(x+1)^2-1}{x+2} + \dfrac{(x+2)^2-1}{x+3}

Given that x>0x>0, the expression above simplifies to:

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