Question

factor of 5a^4-3125

Answer 1

http://answers.yahoo.com/question/index?qid=20110723095459AAjhBOY

Answer 2

take out 5

5(a^4-625)

dif of 2 squares

5(a^2-25)(a^2+25)

and again

5(a+5)(a-5)(a^2+25)

Answer 3

thank you for your help

Answer 4

\[\LARGE 5(a^4 - 5^{4})\]
\[\LARGE 5(a^2 - 5^{2})(a^{2} + 5^{2})\]
\[\LARGE 5(a^2 - 25)(a^{2} + 25)\]