化简 (3(3.82)+2.5(4.41))/(5.5)

解答

化简

\frac{3 ( 3.82 ) + 2.5 ( 4.41 )}{5.5}

4.08818 \dots

求解步骤

\frac{3 ( 3.82 ) + 2.5 ( 4.41 )}{5.5}

去除括号:

(a) = a

= \frac{3 \cdot 3.82 + 2.5 \cdot 4.41}{5.5}

3 \cdot 3.82 + 2.5 \cdot 4.41 = 22.485

= \frac{22.485}{5.5}

数字相除:

\frac{22.485}{5.5} = 4.08818 \dots

= 4.08818 \dots

5 x^{2} + 3.28 x - 0.308 = 0

(x + 3) (x + 1) \leq - 1

f a c t or - 7 x^{2} + 30 x - 8

s im pl i f y \frac{21 a ^{2}}{2 b} \cdot \frac{4 b ^{2}}{3 a ^{2}}

s im pl i f y lo g_{7} (7)