28/09/10
Sarai Cortés Tinajero 1-4
turnO matutino
1: (7x2+2)-(3x2-5) =
7x2 + 2-3x2 + 5
7-3 = 4x2
2 + 5 = 7
R= 4x2+7
2: (8x2-x)-(7x2+3x)=
8x2 - x - 7x2 -3x
8 - 7= 1x2
-1 - 3= - 4x
R=1x2-4x
3: ( 3x2-2x-1)-(4x2+2x+5)=
3x2 - 2x -1 -4x2 -2x -5
3 - 4 = -1x2
-2 - 2= - 4x
-1 - 5 = - 6
R=-1x2-4x-6
4: (-3x+x2-1)-(5x+1-3x2)=
-3x + x2 - 1 - 5x - 1 + 3x2
1 + 3= 4x2
-3 - 5= - 8x
-1 + 1 = 0
R= 4x2-8x+0
5: (-1+7x2-2x)-(5x+3x2-7)
-1 + 7x2 - 2x - 5x - 3x2 + 7
7- 3 = 4x2
-2 - 5= - 7x
-1 + 7= 6
R= 4x2-7x+6
6: (7x3-x2+x-1)-(2x2+3x+6)=
7x3 - x2 + x - 1 - 2x2 - 3x -6
7x3
-1- 2= -3x2
1- 3 = - 2x
-1- 6 = - 7
R=7x3-3x2-2x-7
7: (5x2-2x+5)-(3x3-x2+5)=
5x2 - 2x + 5- 3x3 + x2 -5
-3x3
5 + 1 = 6x2
-2x
5-5=0
R=-3x+6x2-2x+0
8: (3x2-x-7)-(5x3+5-x2+2x)=
3x2 - x - 7 - 5 x3 -5 + x2 -2x
-5x3
3 + 1 = 4x2
-1- 2 = - 3x
-7-5 =- 12
R=-5x3+4x2-3x-12
9: (6x3-2x2-3x+1)-(-x3-x2-5x+7)=
6x3 - 2x2 - 3x + 1 + x3 + x2 + 5 x - 7
6 + 1 = 7x3
-2 + 1 = - 1x2
-3 + 5 = 2x
1-7= - 6
R=7x3-1x2+2x-6
10: ( x-3x2+x3+9)-(-8+7x-x2+x3)=
x- 3x 2 + x3 + 9 + 8 - 7 x + x 2 - x3
1-1= 0x3
-3+1= -2x2
1-7 = -6x
9+8 = 17
R= 0x3-2x2-6x+17
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