展开 (12t+9)/((t-1)(t-4))

解答

展开

\frac{12 t + 9}{( t - 1 ) ( t - 4 )}

\frac{12 t + 9}{t ^{2} - 5 t + 4}

求解步骤

\frac{12 t + 9}{( t - 1 ) ( t - 4 )}

乘开

(t - 1) (t - 4) : t^{2} - 5 t + 4

= \frac{12 t + 9}{t ^{2} - 5 t + 4}

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

e x p an d \frac{10 x}{( 5 x - 3 ) ( 2 x + 1 ) ^{2}}

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

\frac{d}{d q} ((r (q)) (60 - 0.12 q))

e x p an d \frac{( y - x ) d x + y}{d x}