展开 (a+x)sqrt(a-x)

解答

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(a + x) a - x

a a - x + x a - x

求解步骤

(a + x) a - x

= a - x (a + x)

使用分配律:

a (b + c) = ab + a c

a - x (a + x) = a - x a + a - x x

= a - x a + a - x x

= a a - x + x a - x

e x p an d (sin (x) - cos (x)) sin (x)

e x p an d lo g_{10} (4 \frac{x}{y})

e x p an d \frac{( x + 3 ) ( x + 5 )}{x + 2}

s im pl i f y (x lo g_{10} (x) - x) (\frac{1}{4 x ^{2}} - \frac{x}{4})

\frac{\partial}{\partial v} ((z) (2 u^{2} + 2 v^{2})^{2})