Question

What’s the x-intercept of y=x2-4x-12

Answer 1

Answer: (6, 0) and (-2 0)

Step-by-step explanation:x intercept is calculated by plugging in 0 to y:

 

0 =  x2 - 4x - 12

 

we factor out above equation:

 

(x - 6) (x + 2)  = 0

 

so, x = 6 or x  = -2

 

so we have two x intercepts:

 

(6, 0) and (-2, 0)