SOLUTION: Factor each of the following expressions and then simplify, if possible: 81y^4 - 16x^4

Algebra ->  Expressions-with-variables -> SOLUTION: Factor each of the following expressions and then simplify, if possible: 81y^4 - 16x^4      Log On


   

Question 351634: Factor each of the following expressions and then simplify, if possible:
81y^4 - 16x^4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A difference of two squares,
81y%5E4+-+16x%5E4=%289y%5E2-4x%5E2%29%289y%5E2%2B4x%5E2%29
81y%5E4+-+16x%5E4=%283y-4x%29%283y%2B4x%29%289y%5E2%2B4x%5E2%29