Question

I have no idea anyone have any idea

Answer 1

Answer:

(-4,0) or (7,0)

Step-by-step explanation:

If it crosses, the x-axis, y-value would be 0.

=> x² - 3x - 28 = 0

=> x² - 7x + 4x - 28 = 0

=> x(x - 7) + 4(x - 7)

=> x = -4 or 7

Answer 2

Answer:

Step-by-step explanation:

it cuts x-axis where y=0 or f(x)=0

x²-3x-28=0

x²-7x+4x-28=0

x(x-7)+4(x-7)=0

(x-7)(x+4)=0

x=7,-4it will cut x-axis at (-4,0) and (7,0)