Verified answer

Sum of the Roots

• Use this formula -b/a to find the sum of the roots.

Solution (w/ explanation):

Find a, b, and c.

• x² + 8x - 9 = 0
• a = 1
• b = 8
• c = -9

Now use this formula -b/a.

• -8/1
• -8

Answer:

• Sum of the roots: -8