人教版数学中考专题复习课件(一)
C
D
-1.5
B
D
-3
C
C
B
B
A
C
b<a<c
C
4 3 22
5
C
D
D
②③⑥⑧⑩⑪
⑫⑬⑭⑮⑯ ①④⑤⑦
②③⑤⑥⑦⑨⑩⑪⑫⑭⑮ ①④⑧⑬⑯
②③⑥⑩⑫⑭
-4
4
4
1
4
2.6×108
1.2×1011
5.4×107
1.2×10-8
4×10-8
6
5
1.44×1012
0.00 205
169 000
16
π
3
1
3
1
9
1
9
9 9
B
C
A
A
3(或三)
2
D
B
C
C
C
D
D
8
B
3(x+3y)(x-3y)
2(m-3)2
mn(m+n)(m-n)
m(x-1)2
-1(答案不唯一)
①②③④ ⑤
2 3
1 2
4x2y2
2 020
a3
a8
x4
m6n3
-8m6
-ab
3a+3b
ab-3a2
x2-y2+2y-1
19 13
6
±4 ±2
1
6
m(m-3)
(a+3)(a-3)
2a(2a+b)(2a-b)
(x+1)(x+4)
(x-y)(x-y-1)
-31 56
10
C
A
B
D
1
m n
1
x y
1
a 4
D
1
2
2
A
B
①③④
①
x≠-3
x=2
3abc
x(x+1)(x-1)
x+3
x+y
2
1
a 2a
1
x
4
2
18y z
x
2
1
2
x
x 1
B
D
C
D
D
-2
3
±0.1
C
x≥2
2
D
3
1 3
3
±2
1
4
5 7 2
x>2
3和4
m
2 3
B
C
D
D
C
5
D
C
C
B
3
1
12 3
6
C