Question

The sum of the roots of the quadratic equation x2 - 2x-15=0 is

Answer 1

Answer:

${x}^{2} - 2x - 15 = 0 \\ {x}^{2} - 5x + 3x - 15 = 0 \\ x(x - 5) + 3(x - 5) = 0 \\ (x + 3)(x - 5) = 0 \\ x = - 3 \\ x = 5$

Answer 2

Answer:

the roots of this quadratic equation is

X =5

X = -3