Question

The sum of the roots of x2 + 6x - 55 = 0 is:
0.6
-55

Answer 1

Explanation:

x² + 6x - 55 = 0

x² + 11x - 5x - 55 = 0

x(x + 11) - 5x - 55 = 0

x(x + 11) -5 (x + 11) = 0

(x - 5)(x + 11) = 0

Then solve the value of x

x - 5 = 0

x = 5

or

x + 11 = 0

x = -11

The roots are -11 and 5

Sum of the roots

sum = -11 + 5

sum = -6