展开 (3x)/((x+1)^2)

解答

展开

\frac{3 x}{( x + 1 ) ^{2}}

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

求解步骤

\frac{3 x}{( x + 1 ) ^{2}}

(x + 1)^{2} = x^{2} + 2 x + 1

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

e x p an d \frac{2 + 2}{6}

e x p an d n \cdot ln (n) - n - (n + 1) ln (x)

e x p an d (x - 1) \cdot (3 x^{4} = 7 x^{3} + 3 x^{2} + 3 x - 2)

e x p an d \frac{( x + 4 ) ( x - 27 )}{( x ^{2} + 12 x + 37 ) ( x + 3 )}

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