展开 solve(x-6)(sqrt(x-5))

解答

展开

so l v e (x - 6) (x - 5)

e l so vx x - 5 - 6 e l so v x - 5

求解步骤

so l v e (x - 6) (x - 5)

= e l so v (x - 5) (x - 6)

使用分配律:

a (b - c) = ab - a c

a = so l v e (x - 5), b = x, c = 6

= so l v e (x - 5) x - so l v e (x - 5) \cdot 6

= e l so vx (x - 5) - 6 e l so v (x - 5)

去除括号:

(a) = a

= e l so vx x - 5 - 6 e l so v x - 5

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

e x p an d 7 x^{(\frac{1}{2})}

e x p an d (3 d + 1) (e - 2)

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

e x p an d \frac{2 \cdot 5 + 4}{5 - 5}