Question

Select the approximate values of x that are solutions to f(x) = 0, where

f(x) = -9x^2 + 7x + 2

Answer 1

f(x) = -9x^2 + 7x + 2
Factorising we get:

f(x) = (x + 1) (-9x + 2)

The solutions are x = -1 and 2/9ths