展开 ((x-2)(sqrt(x)+2))/(x-4)

解答

展开

\frac{( x - 2 ) ( x + 2 )}{x - 4}

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

求解步骤

\frac{( x - 2 ) ( x + 2 )}{x - 4}

乘开

(x - 2) (x + 2) : x x + 2 x - 2 x - 4

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

e x p an d - 4 x^{3} \cdot x^{2}

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

e x p an d \frac{9 ( x - 1 ) ^{2}}{( 3 x - 1 ) ^{2}}

e x p an d \frac{π x ^{2} ( 6 - x )}{3} - 26

e x p an d \frac{s}{( s - 1 ) ^{4}}