Question

help factor. 5y8 - 125

Answer 1

\[5y^8=125\] ---> \[y^8=25\]---->\[y=\sqrt[8]{25}\]

Answer 2

Is it factor or solve for y? (which is what @akash809 did)

Answer 3

its factor for y @jackellyn which im not good at :I

Answer 4

Okay, so the term that 5 and 125 have in common is 5, so you factor that out
125/5=25

so that leaves you with
\[5(y ^{8}-25)\]

Answer 5

now, let's look at (y^8-25)

y^8 is the same as (y^4)^2
and 25 is the same as (5)^2

Answer 6

which will be a difference of squares
so you split it into two
(y⁴-5)(y⁴+5)
and one has a + and one has a - because the product of a + and - is -

and dont forget the 5 up front
so the answer is
5(y⁴-5)(y⁴+5)

Answer 7

@jackellyn idk why its so hard for me to understand :c i used to know how to do factors but i forgot ._.

Answer 8

its all about practice and knowing the rules lol