展开 9e^{(2sqrt(e)-3)/(sqrt(e))}(y-3)

解答

展开

9 e^{\frac{2 e - 3}{e}} (y - 3)

9 e^{\frac{2 e - 3}{e}} y - 27 e^{\frac{2 e - 3}{e}}

求解步骤

9 e^{\frac{2 e - 3}{e}} (y - 3)

使用分配律:

a (b - c) = ab - a c

a = 9 e^{\frac{2 e - 3}{e}}, b = y, c = 3

= 9 e^{\frac{2 e - 3}{e}} y - 9 e^{\frac{2 e - 3}{e}} \cdot 3

= 9 e^{\frac{2 e - 3}{e}} y - 9 \cdot 3 e^{\frac{2 e - 3}{e}}

数字相乘:

9 \cdot 3 = 27

= 9 e^{\frac{2 e - 3}{e}} y - 27 e^{\frac{2 e - 3}{e}}

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