展开 (x+1)/((x-8)(x+5))

解答

展开

\frac{x + 1}{( x - 8 ) ( x + 5 )}

\frac{x + 1}{x ^{2} - 3 x - 40}

求解步骤

\frac{x + 1}{( x - 8 ) ( x + 5 )}

乘开

(x - 8) (x + 5) : x^{2} - 3 x - 40

= \frac{x + 1}{x ^{2} - 3 x - 40}

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