1.(-1)-(-3)+(+9)
2.x=-3,y=2
a.3y分之x
b.y-x
c.2x+y
d.4xy
3.a=-2,b=3,c=-1
a.abc
b.-a-(-b)+c
c.2a-b-c
d.c分之a+b
Please help me!!!!!!!!!!
P.6-F.1正負數問題(20分)
2007-08-31 4:45 am
回答 (4)
2007-08-31 4:56 am
✔ 最佳答案
1)112a)-1/2
b)5
c)-4
d)-24
3a)6
b)4
c)-6
d)-1
你要step的話再問吧
2007-08-31 5:44 am
1.(-1)-(-3)+(+9)
= -1+3+9
=11
2a.=3Y分之X
=6分之-3
=-6分之3
b.=2-3
=-1
c.=2(-3)+2
=-6+2
=-4
d.=4(-3)2
=-24
3a.=(-2)3(-1)
=-6(-1)
=6
b.=2+3-1
=4
c.=2(-2)-3-(-1)
=-4-3+1
=-6
d.=-1分之-2+3
=-1分之1
=-1
= -1+3+9
=11
2a.=3Y分之X
=6分之-3
=-6分之3
b.=2-3
=-1
c.=2(-3)+2
=-6+2
=-4
d.=4(-3)2
=-24
3a.=(-2)3(-1)
=-6(-1)
=6
b.=2+3-1
=4
c.=2(-2)-3-(-1)
=-4-3+1
=-6
d.=-1分之-2+3
=-1分之1
=-1
2007-08-31 5:01 am
1.(-1)-(-3)+(+9)
=-1+3+9
=11
2.x=-3,y=2
a.3y分之x
=-3/3(2)
-1/2
b.y-x
=2+3
=5
c.2x+y
=2x(-3)+2
=-6+2
=-4
d.4xy
=4x(-3)x2
=-24
3.a=-2,b=3,c=-1
a.abc
=(-2)(3)(-1)
=6
b.-a-(-b)+c
=2-(-3)-1
=4
c.2a-b-c
=2(-2)-3+1
=-6
d.c分之a+b
=(-2+3)/-1
=-1
=-1+3+9
=11
2.x=-3,y=2
a.3y分之x
=-3/3(2)
-1/2
b.y-x
=2+3
=5
c.2x+y
=2x(-3)+2
=-6+2
=-4
d.4xy
=4x(-3)x2
=-24
3.a=-2,b=3,c=-1
a.abc
=(-2)(3)(-1)
=6
b.-a-(-b)+c
=2-(-3)-1
=4
c.2a-b-c
=2(-2)-3+1
=-6
d.c分之a+b
=(-2+3)/-1
=-1
2007-08-31 5:00 am
1. -1+3+9 = 11
2. a. -3/(3x2) = -1/2
b. 2-(-3) = 5
c. 2(-3)+2 = -4
d. 4(-3)(2) = -24
3.a. (-2)(3)(-1) = 6
b. -(-2)-(-3)+(-1) = 2+3-1 = 4
c. 2(-2)-3-(-1) = -4-3+1= -6
d. (-2+3)/(-1) = -1
2. a. -3/(3x2) = -1/2
b. 2-(-3) = 5
c. 2(-3)+2 = -4
d. 4(-3)(2) = -24
3.a. (-2)(3)(-1) = 6
b. -(-2)-(-3)+(-1) = 2+3-1 = 4
c. 2(-2)-3-(-1) = -4-3+1= -6
d. (-2+3)/(-1) = -1
收錄日期: 2021-05-03 11:43:40
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