Question

find x intercepts of the function
4x^2 +8x-32

Answer 1

The x-intercepts of the function are the solutions of the equation.

Answer 2

4x^2 + 8x -32 = 0
divide through by 4
x^2 + 2x - 8 = 0
(x+4)(x-2)
x=-4 and x=2
x={-4,2}

Answer 3

You could also use the quadratic formula for the solutions
x = [-b +-sqrt (b² - 4ac] / 2a
for this equation we would use
a = 4 b = 8 and c = -32 or we could use
a = 1 b = 2 and c = -8