展开 2/((x-2)(x-5))

解答

展开

\frac{2}{( x - 2 ) ( x - 5 )}

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

求解步骤

\frac{2}{( x - 2 ) ( x - 5 )}

乘开

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

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

e x p an d x d x + (y - 2 x) d y

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

e x p an d \frac{- cot ( x ) csc ( x ) ( 1 + sec ( x ) ) - sec ( x ) tan ( x ) ( 1 + csc ( x ) )}{( 1 + sec ( x ) ) ^{2}}

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

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