Answer:
x = ± 10
Step-by-step explanation:
Given
f(x) = 8x² - 800
To find the zeros let f(x) = 0, that is
8x² - 800 = 0 ( add 800 to both sides )
8x² = 800 ( divide both sides by 8 )
x² = 100 ( take the square root of both sides )
x = ± [tex]\sqrt{100}[/tex] = ± 10
Thus
smaller solution is x = - 10
larger solution is x = 10
