化简 sqrt(-6)sqrt(-54)

解答

化简

- 6 - 54

- 18

求解步骤

- 6 - 54

- 54 = 3 - 6

= - 6 \cdot 3 - 6

使用根式运算法则:

a a = a, a \geq 0

- 6 - 6 = - 6

= - 6 \cdot 3

数字相乘:

- 6 \cdot 3 = - 18

= - 18

- 7 x - 8 \leq - 2 x + 7 < - 7 x - 3

s im pl i f y (x - \frac{L}{2})^{3}

f a c t or - 3 x^{2} + 4 x + 15

27 \leq 2 + 5 a

s im pl i f y 45 \cdot 10