Question:

f(x) = -x² - 8x - 18 Find all values of x that correspond

Last updated: 7/14/2022

f(x) = -x² - 8x - 18  Find all values of x that correspond

f(x) = -x² - 8x - 18 Find all values of x that correspond to horizontal tangent lines. Select "None" if the function does not have any values of x that correspond to horizontal tangent lines.