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> (1)计算12-2tan30o+(π-2009)o(2)解方程x-3x-2+12-x=2-数学
(1)计算12-2tan30o+(π-2009)o(2)解方程x-3x-2+12-x=2-数学
题目简介
(1)计算12-2tan30o+(π-2009)o(2)解方程x-3x-2+12-x=2-数学
题目详情
(1)计算
12
-2tan3
0
o
+(π-2009
)
o
(2)解方程
x-3
x-2
+
1
2-x
=2
题型:解答题
难度:中档
来源:不详
答案
(1)
12
-2tan3
0
o
+(π-2009
)
o
=2
3
-2×
3
3
+1
=
4
3
3
+1;
(2)方程两边同乘最小公倍数(x-2),得
x-3-1=2(x-2),
解得x=0.
经检验x=0是原方程的解.
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题目简介
(1)计算12-2tan30o+(π-2009)o(2)解方程x-3x-2+12-x=2-数学
题目详情
(2)解方程
答案
=2
=
(2)方程两边同乘最小公倍数(x-2),得
x-3-1=2(x-2),
解得x=0.
经检验x=0是原方程的解.