展开 (-3)/((-2+x)^2)

解答

展开

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

- \frac{3}{4 - 4 x + x ^{2}}

求解步骤

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

使用分式法则:

\frac{- a}{b} = - \frac{a}{b}

= - \frac{3}{( - 2 + x ) ^{2}}

(- 2 + x)^{2} = 4 - 4 x + x^{2}

= - \frac{3}{x ^{2} - 4 x + 4}

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

e x p an d (x + d x) (y - d y)

e x p an d \frac{7 x + 2}{( x - 4 ) ( x ^{2} + 9 )}

e x p an d (3^{13})^{\frac{1}{4}}

e x p an d 21 (5 + 7) r