Question

(-8y^2+6y-1)+(-8y^2+8y+1)-(-3y^2+9y-9)

Answer 1

The answer of the given equation is
`-13y^(2) -11y+7`

Explanation:

The given equation can be written as,

`(-8y^(2)+6y-1) +(-8y^(2)+8y+1)-(-3y^(2)+9y-9)`

=
`-8y^(2) +6y-1-8y^(2)-8y -1+3y^(2)-9y+9`

[Taking same powered variables together we get,]

=
`(-8y^(2)-8y^(2)+3y^(2)) +(6y-8y-9y)-1-1+9`

=
`-13y^(2) -11y+7`

Here the answer.