• 试题 ID 1819


计算:
(1)$6 \tan 30^{\circ}+(\pi+1)^{\circ}-\sqrt{12}$.

(2)解方程组 $\left\{\begin{array}{l}
2 x-y=4 \\
x+y=2 .
\end{array}\right.$
A
B
C
D
E
F
答案:

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解析:

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