展开 2(2ln(2)-2)

解答

展开

2 \cdot (2 \cdot ln (2) - 2)

4 ln (2) - 4

十进制

- 1.22741 \dots

求解步骤

2 (2 ln (2) - 2)

使用分配律:

a (b - c) = ab - a c

a = 2, b = 2 ln (2), c = 2

= 2 \cdot 2 ln (2) - 2 \cdot 2

数字相乘:

2 \cdot 2 = 4

= 4 ln (2) - 4

e x p an d (\frac{n - 1}{n} y) - y

e x p an d - 5 (p^{2})

e x p an d \frac{s}{( s ^{2} + 1 ) ( s ^{2} + 4 )}

e x p an d K \cdot y \cdot (e^{t^{2}} - e)

e x p an d x - 4^{2}