Step-by-step explanation:
Step 1: Answer problem 1
Pull out 4
[tex]4(9x^2 - 4)[/tex]
Factor
[tex]4(3x + 2)(3x - 2)[/tex]
Step 2: Answer problem 2
Factor
[tex](11 + 2x)(11 - 2x)[/tex]
Step 3: Answer problem 3
Pull out 9
[tex]9(x^2 - 9)[/tex]
[tex]9(x + 3)(x - 3)[/tex]
