Question

Question #5118f

Answer 1

`y=-1/4 or 1/2`

Explanation:

`-2y-1+8y^2`
`=8y^2-2y-1`
`=8y^2-4y+2y-1`
`=(4y+1)(2y-1)`

By factoring,
the expression becomes
`(4y+1)(2y-1)=0`
`4y+1=0 or 2y-1=0`
`y=-1/4 or 1/2`