5.2 Solving of Quadratic Equations by Factorization

All Questions
Factorization of x<sup>4<sup> - 16 is:

  (x-2)(x+2)
  (x- 2)(x+ 2)(x - 4)
  (x- 2)(x+ 2)(x<sup>2<sup> + 4)
  (x+2)<sup>2<sup>