SOLUTION: Factor each polynomial completely. A^4-81b^4 8-2x^2

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Question 327827: Factor each polynomial completely.
A^4-81b^4
8-2x^2
Answer by romerr1(7) About Me  (Show Source):
You can put this solution on YOUR website!
a^4-81b^4
=(a^2-9b^2)(a^2+9b^2)
=(a-3b)(a+3b)(a^2+9b^2)

8-2x^2
=2(4-x^2)
=2(2+x)(2-x)