Factor the expression completely 3x4 3 Solutionfx 3x4 3
     Factor the expression completely.  3x^4 - 3   
  
  Solution
f(x) = 3*x^4 - 3
= 3*(x^4 - 1)
= 3*((x^2)^2 - 1^2)
We know that
a^2 - b^2 = (a + b)(a - b)
Using this
= 3*(x^2 + 1)*(x^2 - 1)
= 3*(x^2 + 1)*(x^2 - 1^2)
again using the same equation
f(x) = 3*(x^2 + 1)(x + 1)(x - 1)

