展开 (10)/((x+5)(x+7))

解答

展开

\frac{10}{( x + 5 ) ( x + 7 )}

\frac{10}{x ^{2} + 12 x + 35}

求解步骤

\frac{10}{( x + 5 ) ( x + 7 )}

乘开

(x + 5) (x + 7) : x^{2} + 12 x + 35

= \frac{10}{x ^{2} + 12 x + 35}

e x p an d ln (\frac{7 x}{x - 7})

e x p an d sin (2 (t - 2 π))

e x p an d \frac{3 x ^{2} + 2}{( x + 1 ) ^{3}}

e x p an d (1 - e^{- 2 s})^{2}

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