1
a
2
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a
婀栧寳鐪侀夯鍩庡競
(
鎬濇簮瀹為獙瀛︽牎
)2018-2019
瀛﹀勾绗竴瀛︽湡鍏勾绾ф暟瀛︿笓棰樺涔犫�斺�旀暣寮忎箻娉?
涓庡洜寮忓垎瑙ｅ簲鐢?/p>
(
鏃犵瓟妗?/p>
)
涓�
閫夋嫨棰?/p>
1.
鑻?/p>
x
2
+2(m-3)x+16
鏄畬鍏ㄥ钩鏂瑰紡锛屽垯
m
鐨勫�肩瓑浜庘�?/p>
(
)
A.3
B.-5
C.7.
D.7
鎴?/p>
-1
2.
涓嬪垪鍚勫紡鏄畬鍏ㄥ钩鏂瑰紡鐨勬槸锛?/p>
锛?/p>
A
銆?/p>
x
2
锛?/p>
x +
1
4
B
銆?/p>
1+4x
2
C
銆?/p>
a
2
+ab+b
2
D
銆?/p>
x
2
+2x
锛?/p>
1
3
锛?/p>
宸茬煡琚櫎寮忔槸
x
3
锛?/p>
2
x
2
锛?/p>
1
锛屽晢寮忔槸
x
锛屼綑寮忔槸锛?/p>
1
锛屽垯闄ゅ紡鏄?/p>
(
)
锛?/p>
A
锛?/p>
x
2
锛?/p>
3
x
锛?/p>
1
B
锛?/p>
x
2
锛?/p>
2
x
C
锛?/p>
x
2
锛?/p>
1
D
锛?/p>
x
2
锛?/p>
3
x
锛?/p>
1
4
锛庤嫢
a
飥?/p>
b
飥?/p>
3
锛?/p>
鍒?/p>
a
2
飥?/p>
b
2
飥?/p>
6
b
鐨勫�间负
(
)
A
锛?/p>
3
B
锛?/p>
6 C
锛?/p>
9
D
锛?/p>
12
5
.
璁＄畻
:1252-50
脳
125+252=
(
)A.100
B.150
C.10 000
D.22 500
6.
宸茬煡
a,b,c
鏄笁瑙掑舰鐨勪笁杈?/p>
,
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(a-b)
2
-c
2
鐨勫�?/p>
(
)
A.
澶т簬闆?/p>
B.
灏忎簬闆?/p>
C.
绛変簬闆?/p>
D.
涓嶈兘纭畾
浜?/p>
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.
1
.
鑻?/p>
(
a
2
锛?/p>
b
2 _
2
)(
a
2
锛?/p>
b
2
+2
)
锛?/p>
16
锛屽垯
a
2
锛?/p>
b
2
锛?/p>
__________
锛?/p>
2
锛?/p>
鑻?/p>
|a
锛?/p>
2|
锛?/p>
b
2
锛?/p>
2b
锛?/p>
1
锛?/p>
0
锛屽垯
a
锛?/p>
__________
锛?/p>
b
锛?/p>
__________.
3
銆佸凡鐭?/p>
a
锛?/p>
锛?/p>
3
锛屽垯
a
2
锛?/p>
鐨勫�兼槸
__________
锛?/p>
4.
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3脳
3
涓綅缃浉閭荤殑
9
涓暟锛堝
6
锛?/p>
7
锛?/p>
8
锛?/p>
13
锛?/p>
14
锛?/p>
15
锛?/p>
20
锛?/p>
21
锛?/p>
22
锛夛紟濡傛灉
鍦堝嚭鐨?/p>
9
涓暟涓紝鏈�灏忔暟涓庢渶澶ф暟鐨勭Н涓?/p>
192
锛岄偅涔堟渶灏忕殑鏁版槸
__________
锛?/p>
5.
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20cm
闀跨殑閾佷笣鍒嗘垚涓ゆ锛?/p>
灏嗘瘡涓�娈靛洿鎴愪竴涓鏂瑰舰锛?/p>
鑻ヨ繖涓や釜
姝ｆ柟褰㈢殑闈㈢Н涔嬪樊鏄?/p>
5cm
锛屽垯涓ゆ閾佷笣鐨勯暱鍒嗗埆涓?/p>
锛?/p>
6.
鍥犲紡鍒嗚В
x
2
+
ax
+
b
锛?/p>
鐢茬湅閿欎簡
a
鐨勫�硷紝
鍒嗚В鐨勭粨鏋滄槸
锛?/p>
x
+
6
锛?/p>
锛?/p>
x
锕?/p>
2
锛?/p>
锛?/p>
涔欑湅閿欎簡
b
鐨勫�硷紝
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x
锕?/p>
8
锛?/p>
锛?/p>
x
+
4
锛?/p>
锛岄偅涔?/p>
x
2
+
ax
+
b
鍒嗚В鍥犲紡姝ｇ‘鐨勭粨鏋滀负
__________
8.
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x
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1
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1
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=x
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1
锛?/p>
锛?/p>
x
锕?/p>
1
锛?/p>
锛?/p>
x
2
+
x
+
1
锛?/p>
=x
3
锕?/p>
1
锛?/p>
锛?/p>
x
锕?/p>
1
锛?/p>
锛?/p>
x
3
+
x
2
+
x
+
1
锛?/p>
=x
4
锕?/p>
1
锛?/p>
鈥?/p>
鐨勮寰嬶紝鍒欏彲浠ュ緱鍑?/p>
2
2017
+
2
2016
+
2
2015
+
鈥?/p>
+
2
3
+
2
2
+
2
+
1
鐨勭粨鏋滃彲浠ヨ〃绀轰负
锛?/p>
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1
锛庡埄鐢ㄤ箻娉曞叕寮忚绠?/p>
锛?/p>
1
锛?/p>
锛?/p>
2x
锕?/p>
3
锛?/p>
锛堬梗
3
锕?/p>
2x
锛?/p>
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锛?/p>
2x
锕?/p>
1
锛?/p>
2
锛?/p>
2
锛?/p>
锛?/p>
x
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2y
+
1
锛?/p>
锛?/p>
x
锕?/p>
2y
+
1
锛夛梗锛?/p>
x
锕?/p>
2y
锕?/p>
1
锛?/p>
2
锛?/p>
2
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鈶?/p>
4ab
2
锕?/p>
4a
2
b
+
a
3
鈶?/p>
16
锛?/p>
x
锕?/p>
y
锛?/p>
2
锕?/p>
24x
锛?/p>
x
锕?/p>
y
锛?/p>
+
9x
2
鈶?/p>
6
锛?/p>
a
锕?/p>
b
锛?/p>
2
锕?/p>
3
锛?/p>
b
锕?/p>
a
锛?/p>
2
锛?
3
銆?/p>
瑙ｄ笉绛夊紡銆?/p>
(x+1)(x-1)+8
锛?/p>
(x+5)(x-1).
4.
鑻?/p>
a
2
锕?/p>
4a+b
2
锕?/p>
10b+29=0
锛屾眰
a
2
b+ab
2
鐨勫�硷紟