问题 解答题
(1)计算:|
3
-4|-22+
12

(2)计算:
2
3
9x
+6
x
4
-2X
1
x

(3)计算(
1
2
)-1×(
3
-
2
)0+
4
8
-|-
2
|

(4)解方程:2x2-7x+6=0
答案

(1)原式=4-

3
-4+2
3

=

3

(2)原式=

2
3
×3
x
+6×
x
2
-2
x

=2

x
+3
x
-2
x

=3

x

(3)原式=2×1+

2
-
2
=2;

(4)(2x-3)(x-2)=0,

∴2x-3=0,x-2=0,

解得x1=

3
2
,x2=2.

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