展开 ((x+3)(x+4))/((x+5)(x+2))

解答

展开

\frac{( x + 3 ) ( x + 4 )}{( x + 5 ) ( x + 2 )}

\frac{x ^{2} + 7 x + 12}{x ^{2} + 7 x + 10}

求解步骤

\frac{( x + 3 ) ( x + 4 )}{( x + 5 ) ( x + 2 )}

乘开

(x + 5) (x + 2) : x^{2} + 7 x + 10

= \frac{( x + 3 ) ( x + 4 )}{x ^{2} + 7 x + 10}

乘开

(x + 3) (x + 4) : x^{2} + 7 x + 12

= \frac{x ^{2} + 7 x + 12}{x ^{2} + 7 x + 10}

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e x p an d \frac{2 ( x ^{2} + 2 ln ( x + 2 ) - 4 )}{x ^{2} + 2 x + 1}

e x p an d ((1 - λ) q + λ p) (a \cdot e^{b (1 - λ) q + λ p} + c)

e x p an d (x - e) (x - 23)

e x p an d \frac{1}{2} (x e^{x})