Question

Quem fizer primeiro e certo eu dou 100 pontos
5) Resolva as operações com polinômios, observando a regra de cada um:


a) (2x²- 9x + 2) +( 3x² + 7x - 1)=

b) (5x² + 5x - 8) +( -2x² + 3x - 2)=

c) (3x - 6y+4) + ( 4x + 2y -2)=

d) (6x² - 6x + 9) - ( 3x² + 8x - 2)=

e) (7x - 4y + 2) - ( 2x - 2y + 5)=

f) (4x – y - 1) - ( 9x + y + 3)=

g) 2x. (x+y)=

h) 2x.(x²-2x+5)=

i) (x+5).(x+2)=

j) (3x+2).(2x²+1)=

k) (3y³ + 6y²) : (3y) =

l) ( 10x² + 6x) : (-2x) =

m) 3x⁴ – 6x³ + 10x²) : (-2x²) =

n) (x⁷ + x⁵ + x³) : (-x²) =

Answer 1

a) (2x²- 9x + 2) +( 3x² + 7x - 1) =

2x²+3x² -9x+7x +2-1

5x² -2x +1

b) (5x² + 5x - 8) +( -2x² + 3x - 2)=

3x² + 8x - 10

c) (3x - 6y+4) + ( 4x + 2y -2)=

7x - 4y + 2

d) (6x² - 6x + 9) - ( 3x² + 8x - 2)=

6x²-6x+9 -3x²-8x+2

3x² - 14x+ 11

e) (7x - 4y + 2) - ( 2x - 2y + 5)=

7x-4y+2 -2x+2y-5

5x - 2y - 3

f) (4x – y - 1) - ( 9x + y + 3)=

4x-y-1 -9x-y-3

-5x -2y -4

g) 2x. (x+y)=

2x²+2xy

h) 2x.(x²-2x+5)=

2x³ - 4x² + 10x

i) (x+5).(x+2)=

x²+2x +5x+10

x² + 7x + 10

j) (3x+2).(2x²+1)=

6x³+3x +2x²+2

6x³+2x³+3x+2

k) (3y³ + 6y²) : (3y) =

3y³/3y + 6y²/3y

y² + 2y

l) ( 10x² + 6x) : (-2x) =

10x²/-2x + 6x/-2x

-5x - 3

m) 3x⁴ – 6x³ + 10x²) : (-2x²) =

-3/2 x² + 3x - 5

n) (x⁷ + x⁵ + x³) : (-x²) =

-x⁷-² - x⁵-² - x³-²

-x⁵ - x³ - x