化简 sqrt(20)sqrt(24)

解答

化简

2024

430

十进制

21.90890 \dots

求解步骤

2024

20 = 25

= 2524

24 = 26

= 25 \cdot 26

使用根式运算法则:

a b = ab, a \geq 0, b \geq 0

56 = 5 \cdot 6

= 2 5 \cdot 6 \cdot 2

数字相乘:

5 \cdot 6 = 30

= 230 \cdot 2

数字相乘:

2 \cdot 2 = 4

= 430

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