化简 2(1+sqrt(3))

解答

化简

2 (1 + 3)

2 + 23

十进制

5.46410 \dots

求解步骤

2 (1 + 3)

使用分配律:

a (b + c) = ab + a c

2 (1 + 3) = 2 \cdot 1 + 23

= 2 \cdot 1 + 23

数字相乘:

2 \cdot 1 = 2

= 2 + 23

s im pl i f y (1 + 2 x)^{2}

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

e x p an d (x + y) d x + (x - y) d y

e x p an d \frac{1}{( x + 1 ) ^{3}}

e x p an d \frac{3 x ^{2} + 6 x + 5}{( x + 2 ) ^{2}}