Respostas

2013-11-16T14:58:36-02:00
Subtração de Polinômios
A) (5x²-4x+7)-(3x²+7x-10
5x²-4x+7-3x²-7x+10
2x² -11x +17
B) (6x²-6x+9)-(3x²+8x-2)
6x²-6x+9-3x²-8x+2
3x² - 14x +11

C) (7x-4y+2)-(2x-2y+5)
7x-4y+2-2x+2y - 5
5x -2y -3

D) (4x-y-1)-(9x+y+3)
4x-y-1-9x-y-3

F) (4x³-6x²+3x)-(7x³-6x²+8x)
4x³-6x²+3x-7x³+6x²-8x

G) (x²-5x+3)-(4x²+6)
x²-5x+3-4x²-6
-3x² - 5x -3

H) (x²+2xy-y²)-(y²+x²+2xy)
x²+2xy-y²-y²-x²-2xy
-2y²

I) (7ab+4c-3a)-(5c+4a-10)
7ab+4c-3a-5c-4a+10
7ab -c -7a +10
7 3 7
2013-11-16T15:02:28-02:00
A)  

= 5x²-4x+7x-3x²-7x-10
=  2x²-11x-3

B) 

= 6x²-6x+9-3x²-8x+2
= 3x²-14x-7

C) = 7x-4y+2_2x+2y-5
    =  5x-2y-3

D) = 4x-y+1-9x-y-3
    =  -5x-2y-11

F) = 4x³-6x²+3x-7x³+6x²-8x    *+6x² e -6x² se anulam
    = -3x³-7x³-5x

G) = x²-5x+3=4x²-6
    =  -3x²-6x-3

H) = x²+2xy-y²-y²-x²-2xy    *+2xy e -2xy se anulam
    =  -2y²-x²

I) = 7ab+4c-3a-5c-4a+10
  = 7ab-7a-1c+10

se algo estiver errado me avise
3 3 3