Solve the zeros of the functions.

a) [[$ f(x) = x^2 + x $]]



Answer: The zeros of the function are [[$ x = $]] or [[$ x = $]] .

b) [[$ f(x) = 4x^2 - 2x $]]



Answer: The zeros of the function are [[$ x = $]] or [[$ x = $]] .

c) [[$ f(x) = 9x^2 + 3x $]]



Answer: The zeros of the function are [[$ x = $]] or [[$ x = $]] .

d) [[$ f(x) = -5x^2 - x $]]


Answer: The zeros of the function are [[$ x = $]] or [[$ x = $]] .