化简 1/2 (sqrt(u^2-4)+u)

解答

化简

\frac{1}{2} (u^{2} - 4 + u)

\frac{u ^{2} - 4 + u}{2}

求解步骤

\frac{1}{2} (u^{2} - 4 + u)

使用分式法则:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot ( u ^{2} - 4 + u )}{2}

使用法则:

1 \cdot a = a

1 \cdot (u^{2} - 4 + u) = (u^{2} - 4 + u)

= \frac{u ^{2} - 4 + u}{2}

e x p an d - \frac{L ( 27 B + 8 α + γ )}{54}

e x p an d 2^{x} l e f t (2^{n} - 1)

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

s im pl i f y (- 2 + 6 - x)^{2}

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