given the quadratic function f(x)=9x^2+36x+36, finda value of x such that f(x)=9
so, solve 9 = 9x^2+36x+36
or, 9x^2+36x+27 = 0
surely that doesn't pose any difficulties, eh?
It may be easier if you factor out a 9:
x^2 + 4x + 3 = 0
or, 9x^2+36x+27 = 0
surely that doesn't pose any difficulties, eh?
It may be easier if you factor out a 9:
x^2 + 4x + 3 = 0