SPOILER
1)左邊2005^2-25=4002000=4000x, x=1000.5
2)x^3+5x^2-11x+5-P=-x^2+6x-3, P=x^3+6x^2-17x+8
3)2次
4)sqrt(sqrt(a))=4, a=64
5.sqrt(5/3)-sqrt(3/5)=sqrt(3/5+5/3+2sqrt(3/5*5/3))=sqrt(64/15) or 8sqrt(1/15)
6)x/2-9/4?
7)(*)=[(2x+3)-(2x-3)]^2=36
8)P=(3x^2+x)(x^2-1)+x+3=3x^4+x^3-3x^2+3
9)D
10)27
11)sqrt0.4 ~=sqrt10/sqrt5^2=0.6324...
12)6.08
13)(7-(-7))*4/2=28
14)120
15)丁(1.08)
16)76.157
17)AC^2=AB^2+BC^2, area = pi(AB^2/4+BC^2/4)=50.265cm^2
18)a^2+4ab 四者皆不是?!?
19)(a+b+c)(d+e), B
20)C
1)1/600+604*596/600-600=-1/40
2)(245^2-235^2)+(225^2-215)^2=9200
3)A,C,D,E
4)AE=x, BE=y, x+y=27, (15+x)^2=(24+y)^2, => AE=x=18
5)z>y>x
6)1/sqrt(n)+sqrt(n-1)=sqrt(n)-sqrt(n-1); sqrt(n)-1>8, n=82
7)~
8)1)sqrt(4+1/9)~2.027 =/= 2+1/3 wrong
2)sqrt(625)=25 only wrong
3)correct
4)sqrt((a+b)^2)=|a+b|, since ab>0, |a+b|=|a|+|b| correct
5)correct
6)no, sqrt(11) in under R
2)x^3+5x^2-11x+5-P=-x^2+6x-3, P=x^3+6x^2-17x+8
3)2次
4)sqrt(sqrt(a))=4, a=64
5.sqrt(5/3)-sqrt(3/5)=sqrt(3/5+5/3+2sqrt(3/5*5/3))=sqrt(64/15) or 8sqrt(1/15)
6)x/2-9/4?
7)(*)=[(2x+3)-(2x-3)]^2=36
8)P=(3x^2+x)(x^2-1)+x+3=3x^4+x^3-3x^2+3
9)D
10)27
11)sqrt0.4 ~=sqrt10/sqrt5^2=0.6324...
12)6.08
13)(7-(-7))*4/2=28
14)120
15)丁(1.08)
16)76.157
17)AC^2=AB^2+BC^2, area = pi(AB^2/4+BC^2/4)=50.265cm^2
18)a^2+4ab 四者皆不是?!?
19)(a+b+c)(d+e), B
20)C
1)1/600+604*596/600-600=-1/40
2)(245^2-235^2)+(225^2-215)^2=9200
3)A,C,D,E
4)AE=x, BE=y, x+y=27, (15+x)^2=(24+y)^2, => AE=x=18
5)z>y>x
6)1/sqrt(n)+sqrt(n-1)=sqrt(n)-sqrt(n-1); sqrt(n)-1>8, n=82
7)~
8)1)sqrt(4+1/9)~2.027 =/= 2+1/3 wrong
2)sqrt(625)=25 only wrong
3)correct
4)sqrt((a+b)^2)=|a+b|, since ab>0, |a+b|=|a|+|b| correct
5)correct
6)no, sqrt(11) in under R
完成時間: 20分鐘
我覺得頂多值3星
話說啊第18題a^2+4ab怎會是(a+b)^2呢
TW的數學考卷沒長答都很易 Orz
基測還只有MC... Orz
找天把自己的貼上來好了 Orz