展开 ((x)(y^2+1))/((y)(x^2+1))

解答

展开

\frac{( x ) ( y ^{2} + 1 )}{( y ) ( x ^{2} + 1 )}

\frac{x y ^{2} + x}{x ^{2} y + y}

求解步骤

\frac{( x ) ( y ^{2} + 1 )}{( y ) ( x ^{2} + 1 )}

去除括号:

(a) = a

= \frac{x ( y ^{2} + 1 )}{y ( x ^{2} + 1 )}

乘开

y (x^{2} + 1) : x^{2} y + y

= \frac{x ( y ^{2} + 1 )}{x ^{2} y + y}

乘开

x (y^{2} + 1) : x y^{2} + x

= \frac{x y ^{2} + x}{x ^{2} y + y}

e x p an d 2 A (0, - 2, 1) + 3 B (- 1, 0, 1) - 4 C (3, 2, 0)

e x p an d - \frac{14}{27} + \frac{7 ( 2 ^{39} + 3 ^{39} )}{2 ^{38} \cdot 45}

s im pl i f y (x + 3 - x - 3)^{2}

e x p an d (28460) (x - 38) e^{- \frac{x}{10} - 0.5}

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