展开-3pi(3sqrt(2)-sqrt(11))

解答

展开

- 3 π (32 - 11)

- 92 π + 311 π

十进制

- 8.72749 \dots

求解步骤

- 3 π (32 - 11)

使用分配律:

a (b - c) = ab - a c

a = - 3 π, b = 32, c = 11

= - 3 π 32 - (- 3 π) 11

使用加减运算法则

- (- a) = a

= - 3 \cdot 32 π + 311 π

数字相乘:

3 \cdot 3 = 9

= - 92 π + 311 π

e x p an d \frac{- 3 k + 320}{20 k ( 3 k + 10 )}

e x p an d sin (2) (t + π)

e x p an d \frac{1}{2} 5 y - 6 (= - y - 9)

e x p an d A B A (- 2, - 5) B (3, 1)

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