展开 6a*(5-sqrt(3))

解答

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6 a \cdot (5 - 3)

30 a - 63 a

求解步骤

6 a (5 - 3)

= 6 (5 - 3) a

使用分配律:

a (b - c) = ab - a c

a = 6 a, b = 5, c = 3

= 6 a \cdot 5 - 6 a 3

= 6 \cdot 5 a - 63 a

数字相乘:

6 \cdot 5 = 30

= 30 a - 63 a

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