Answer:
Step-by-step explanation:
Question 1)
Rewrite 900 as 30²:
[tex]x^{2} -30^{2}[/tex]
Use D.O.T.S (difference of two squares) formula [tex]x^{2} -y^{2} =(x+y)(x-y)[/tex] :
[tex]x^{2} -30^{2} = (x+30)(x-30)[/tex]
Answer 1) (x+30)(x-30)
Question 2)
Rewrite 64 as 8²:
[tex]c^{2} -8^{2}[/tex]
Use D.O.T.S (difference of two squares) formula [tex]x^{2} -y^{2} =(x+y)(x-y)[/tex] :
[tex]c^{2} -8^{2} = (c+8)(c-8)[/tex]
Answer 2) (c+8)(-8)
