Question

16. -5 is a root of the quadratic equation
n² - 8n - 65 = 0.
What is the other root of the equation?
17. If 5 is one of the roots of the quadratic
equation x² + 4x – 45 = 0, what is the other root?
18. Given that and - 3 are the roots of the equation 0 = ax + bx + c, find a, b, c.
where a, b and c are the least possible integers.
19. 7 and -3 are the roots of the quadratic
equation x2 + kx - 21 = 0.
What is the value of k?
20. If 1 is a root of the equation 5r2 + kr - 3 =
find the other root.​

Answer 1

Answer:

16.the other root is 13

17.the other root is -9