My first question is f(x)=9x^4-27
*must factor out completly (don't forget to include complex roots)
---- i don'yt know where to start. i can't use the quadratic---since it is raised to the 4th how would i factor out? would it be
9x^4+27x^2-27-27 but then i have a x^2 in my equation.
my second question is
---- if i use the quatric in this equation i get a decimal under my root. So i'm stuck after i equal it to zero.
i'm having trouble factoring this out. i need 2 numbers that when mult equal 45 and when added/subtracted equal 7? but both of my signs need to be (+) positive?