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

Answer

Step-by-step 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

correct

step-by-step explanation:

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)