9.5
鍗曢」寮忎箻澶氶」寮忔硶鍒欑殑鍐嶈璇嗏�斿洜寮忓垎瑙?/p>
(
涓�
)
1
锛?/p>
涓嬪垪浠庡乏鍒扮煶鐨勫彉褰や腑锛?/p>
灞炰簬鍒嗚В鍥犲紡鐨勬槸
(
)
A
锛?/p>
(x+1)(x
锛?/p>
2)=x
2
锛?/p>
x
锛?/p>
2
B
锛?/p>
x
2
锛?/p>
2x+l=x(x
锛?/p>
2)+l
C
锛?/p>
(3x
锛?/p>
y)
2
=9x
2
锛?/p>
6xy+y
2
D
锛?/p>
x
2
锛?/p>
y
2
=(x+y)(x
锛?/p>
y)
2
锛庡椤瑰紡
(
)
鍒嗚В鍥犲紡鐨勭粨鏋滄槸
2
2
m
m
n
n
飪?/p>
飪讹儲
飪?
飥?/p>
飥?/p>
飪?
飪凤儳
飪?/p>
飪?/p>
飪革儴
飪?
锛?/p>
A
锛?/p>
2
2
4
m
n
飥?/p>
飥?/p>
B
锛?/p>
2
2
4
m
n
飥?/p>
飥?/p>
C
锛?/p>
2
2
4
m
n
飥?/p>
D
锛?/p>
2
2
4
m
n
飥?/p>
3
锛庡
x
2
锛?/p>
3x+2
鍒嗚В鍥犲紡锛岀粨鏋滀负
(
)
A
锛?/p>
x(x
锛?/p>
3)+2
B
锛?/p>
(x
锛?/p>
1)(x
锛?/p>
2)
C
锛?/p>
(x
锛?/p>
1)(x+2)
D
锛?/p>
(x+1)(x
锛?/p>
2)
4
锛庝笅鍒楀悇寮忎腑锛屼粠绛夊紡宸﹁竟鍒扮瓑寮忓彸杈圭殑鍙樺舰灞炰簬鍥犲紡鍒嗚В鐨勬槸
(
)
A
锛?/p>
a
b
锛?/p>
a
锛?/p>
b+1=
a
(b
锛?/p>
1)
锛?/p>
b+1
B
锛?/p>
a
b
锛?/p>
a
锛?/p>
b+1=
a
b(1
锛?
1
b
锛?/p>
1
a
+
1
ab
)
C
锛?/p>
(
a
锛?/p>
1)(b
锛?/p>
1)
a
b
锛?/p>
a
锛?/p>
b+1
D
锛?/p>
a
b
锛?/p>
a
+b
锛?/p>
l=(
a
+1)(b
锛?/p>
1)
5
锛庡皢澶氶」寮?/p>
x
2
锛?/p>
3x
锛?/p>
4
鍒嗚В鍥犲紡鐨勭粨鏋滄槸
(
)
A
锛?/p>
(x
锛?/p>
4)(x+1)
B
锛?/p>
(x
锛?/p>
4)(x
锛?/p>
1)
C
锛?/p>
(x+4)(x+1)
D
锛?/p>
(x+4)(x
锛?/p>
1)
6
锛庢妸涓�涓?/p>
________
鍖栨垚
________
鐨勫舰寮忥紝杩欑鍙樺舰鍙仛鎶婅繖涓椤瑰紡鍒嗚В鍥犲紡锛?/p>
7
锛?/p>
杩愮畻
5
a
(4
a
锛?/p>
b
2
)=20
a
2
锛?/p>
5
a
b
2
鏄?/p>
_______
杩愮畻锛?/p>
杩愮畻
20
a
2
锛?/p>
5
a
b
2
=5
a
4
a
锛?/p>
b
2
)
鏄?/p>
____
锛?/p>
8
锛庡垎瑙ｅ洜寮忥細
a
2
+
a
b=______________
锛?/p>
9
锛庡鏋滃椤瑰紡
a
x+B
鍙垎瑙ｄ负
a
(x
锛?/p>
y)
锛屽垯
B
绛変簬
_____________
锛?/p>
10
锛庡鏋?/p>
A
梅
(2x
锛?/p>
1)=(3x+2)
锛岄偅涔堝椤瑰紡
A
鍙互鍒嗚В鍥犲紡涓?/p>
___________
锛?/p>
11
锛庝笅鍒楀悇寮忎粠宸﹁竟鍒板彸杈圭殑鍙樺舰鍝簺鏄洜寮忓垎瑙ｏ紝鍝簺涓嶆槸
?
(1)x
2
+x=x(1+
1
x
)
锛?/p>
(2)
a
2
锛?/p>
26=(
a
+5)(
a
锛?/p>
5)
锛?/p>
1
锛?/p>
(3)(m+n)(m
锛?/p>
n)=m
2
锛?/p>
n
2
锛?/p>
(4)x
2
+4x+4=(x+2)
2
锛?/p>
(5)3x
2
锛?/p>
2xy+x=x(3x
锛?/p>
2y)
锛?/p>
12
锛?/p>
鏌愰珮閫熷叕璺叏闀夸负
1500
鍗冪背锛?/p>
鍒濅簩瀛︾敓缁勬垚鐨勪紭绉�瀛︾敓娓稿鍥㈢涓�澶╄浜嗗叏绋嬬殑
56
锛咃紝
绗簩澶╄浜嗗叏绋嬬殑
44
锛咃紟闂袱澶╁叡琛屼簡澶氬皯鍗冪背
?