展开 (x^2-1)/(x-1)

解答

展开

\frac{x ^{2} - 1}{x - 1}

x + 1

求解步骤

\frac{x ^{2} - 1}{x - 1}

分解

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

= \frac{( x + 1 ) ( x - 1 )}{x - 1}

约分:

x - 1

= x + 1

\frac{d ^{2}}{d x ^{2}} ((y) (y^{4} - 2 x - 5))

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

e x p an d \frac{x ^{4} - 4 x ^{3} + 6 x ^{2} - ( m + 2 ) x + n + 3}{x ^{2} + 2 x + 1}

e x p an d \frac{2 x ^{2} + 17 x - 21}{( x + 5 ) ( x + 1 ) ( x - 2 )}

e x p an d \frac{7}{( x - 1 ) ^{2}}