Question

8) Calculeos polinômios
a) (2x²-9x+2) + (5x²+3x-1)
b) (6x²+4x-8) + (-2x²+3x-2)
c) (2x-6y+4) + (6x+2y-2)
d) (5x²-4x+7) - (9x²+7x-6)
e) (6x²-6x+9) - (3x²+8x-2)
f) (7x-4y+2) - (2x-2y+5)​

Answer 1

A) (2x²-9x+2) + (5x²+3x-1)

2x^2 - 9x + 2 + (5x^2 +3x - 1)

2x^2 - 9x + 2+ 5x^2 + 3x - 1

7x^2 - 9x + 2 + 3x - 1

7x^2 - 6x + 2 - 1

7x2 - 6x + 1

B) (6x²+4x-8) + (-2x²+3x-2)

6x^2 + 4x - 8 + ( - 2x^2 + 3x - 2)

6x^2 + 4x - 8 - 2x^2 + 3x - 2

4x^2 + 4x - 8 + 3x - 2

4x^2 + 7x - 8 - 2

4x^2 + 7x - 10

C) (2x-6y+4) + (6x+2y-2)

2x - 6y + 4 + (6x + 2y - 2)

2x - 6y + 4 + 6x + 2y - 2

8x - 6y + 4 + 2y - 2

8x - 4y + 4 - 2

8x - 4y + 4

D) (5x²-4x+7) - (9x²+7x-6)

5x² - 4x + 7 - (9x² - 7x + 6)

5x² - 4x - 7 - 9x² - 7x + 6

-4x^2 - 4x + 7 - 7x + 6

-4x^2 - 11 - 7 + 6

-4x^2 - 11x + 13

E) (6x²-6x+9) - (3x²+8x-2)

6x² - 6x + 9 - (3x² - 8x + 2)

6x² - 6x + 9- 3x² - 8x ++ 2

3x^2 - 6x - 9 - 8x + 2

3x^2 - 14x + 9 - 2

3x^2 - 14 + 11

F( (7x-4y+2) - (2x-2y+5)

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

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

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

5x - 2y - 3

Espero ter ajudado.