展开 ((x+h+1))/((x+h)^2+1)

解答

展开

\frac{( x + h + 1 )}{( x + h ) ^{2} + 1}

\frac{x + h + 1}{x ^{2} + 2 x h + h ^{2} + 1}

求解步骤

\frac{x + h + 1}{( x + h ) ^{2} + 1}

乘开

(x + h)^{2} + 1 : x^{2} + 2 x h + h^{2} + 1

= \frac{x + h + 1}{x ^{2} + 2 x h + h ^{2} + 1}

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