Question

the roots of the quadratic equation x² + 2x - 15 = 0 are? *

Answer 1

Answer:

3 and -5

Step-by-step explanation:

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

$(x - 3)(x + 5) = 0$

$x = 3$

$x = - 5$

Answer 2

Answer:

x² + 2x -15 =0

x² +5x -3x -15=0

x(x+5) -3(x+5)=0

(x+5)(x-3)=0

x+5 = 0, x -3 = 0

x= -5, x= 3

Step-by-step explanation:

hence the zeros are 3 and -5