展开 (6x^2-x-136)/((x-5)(x+4))

解答

展开

\frac{6 x ^{2} - x - 136}{( x - 5 ) ( x + 4 )}

\frac{6 x ^{2} - x - 136}{x ^{2} - x - 20}

求解步骤

\frac{6 x ^{2} - x - 136}{( x - 5 ) ( x + 4 )}

乘开

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

= \frac{6 x ^{2} - x - 136}{x ^{2} - x - 20}

e x p an d (2, 0, - 2) y (3, - 3, 0)

e x p an d \frac{ab ( a ^{4} + b ^{4} )}{a ^{6} + b ^{6}}

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

e x p an d \frac{1}{( k + 3 ) ( k + 4 )}

e x p an d (2) (3 x - 2 y = 9)