Answer:
(8.47,0) (-0.47,0)
Explanation:
y = a(x - h)² + k
y = a(x - 4)² - 20
-4 = a(0 - 4)² - 20
16 = 16a
a = 1
y = (x - 4)² - 20
x-intercepts: y = 0
(x - 4)² = 20
x - 4 = +/- 4.47..
x = 4.47+4, -4.47+4
x = 8.47, -0.47
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