计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1

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计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
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计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1

计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
分子因式分解
(x² + 4x + 4 +1) / (x+2) - (x² + 6x +9 +1)/(x+3) + 1
= [(x+2)² +1] / (x+2) - [(x+3)² + 1]/(x+3) + 1
= (x+2) + 1/(x+2) - (x+3) - 1/(x+3) + 1
= 1/(x+2) - 1/(x+3)
= [(x+3) - (x+2)] / (x+2)(x+3)
= 1 / (x+2)(x+3)