展开 ((x+4)(x-5))/((x+6)(3x-2))

解答

展开

\frac{( x + 4 ) ( x - 5 )}{( x + 6 ) ( 3 x - 2 )}

\frac{x ^{2} - x - 20}{3 x ^{2} + 16 x - 12}

求解步骤

\frac{( x + 4 ) ( x - 5 )}{( x + 6 ) ( 3 x - 2 )}

乘开

(x + 6) (3 x - 2) : 3 x^{2} + 16 x - 12

= \frac{( x + 4 ) ( x - 5 )}{3 x ^{2} + 16 x - 12}

乘开

(x + 4) (x - 5) : x^{2} - x - 20

= \frac{x ^{2} - x - 20}{3 x ^{2} + 16 x - 12}

e x p an d \frac{4 x ^{2} - 1}{( x + 5 ) ( x + 3 )}

e x p an d \frac{x ( 5 ln ( x ) - 1 )}{25}

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

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

e x p an d \frac{x ( 100 - x )}{4}