### Home > INT2 > Chapter 4 > Lesson 4.1.5 > Problem4-50

4-50.

Completely factor each polynomial.

1. $x^2−64$

This is a difference of two squares.

$(x+8)(x−8)$

1. $x^2−6x+9$

This is a perfect square trinomial.

$(x−3)^2$

1. $4x^2+4x+1$

Look at the hint in part (b).

1. $4x^2−49$

Start by factoring out the greatest common factor. Then look at the hint in part (a).