5y^8 - 125
*you have to factor completley
5y^8 - 125 =
5(y^8 - 25) =
5(y^4 + 5)(y^4 - 5)=
5(y^4 + 5)[y^2 + sqrt(5)][y^2 - sqrt(5)]=
5(y^4 + 5)[y^2 + sqrt(5)]*
[y + 5^(1/4)][y - 5^(1/4)]
good work, good explaination
*you have to factor completley
5y^8 - 125 =
5(y^8 - 25) =
5(y^4 + 5)(y^4 - 5)=
5(y^4 + 5)[y^2 + sqrt(5)][y^2 - sqrt(5)]=
5(y^4 + 5)[y^2 + sqrt(5)]*
[y + 5^(1/4)][y - 5^(1/4)]
good work, good explaination