Question

me ajudem por favor ​

Answer 1

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

3x - 6y + 4 + 4x + 2y - 2

3x + 4x - 6y + 2y + 4 - 2

7x - 4y - 2 = 0

d) (5x² - 7x + 2 ) + (2x² + 7x - 1)

5x² - 7x + 2 + 2x² + 7x - 1

5x² + 2x² - 7x + 7x + 2 - 1

7x² - 1 = 0

7x² = 1

x² = 1 / 7

√x² = √1/7

x = √1/7

e) (4x + 3y + 1) + (6x - 2y - 9)

4x + 3y + 1 + 6x - 2y - 9

4x + 6x + 3y - 2y + 1 - 9

10x - y - 8 = 0