solve this polynomial equation by factoring: 5x^5-80x=0
5x^5 - 80x = 0
5x(x^4-16) = 0 for this to be true,
either 5x= 0 which means x= 0
or x^4 - 16 = 0 which means x^4 = 16 or x = +- 2 x = 0,2, -2
+37084 
