Question

Helllllllllppppppppp

Answer 1

`(8)/(5) x^(2)  - (16)/(5) xy + 4x`

`xy^(2) + (2)/(3)y - 8y^(2)z`

Explanation:

We have to simplify the followings:

1)
`- (4)/(5)x (- 2x + 4y - 5)`

=
`- (4)/(5)x * (- 2x) +  - (4)/(5)x * (4y) + - (4)/(5)x * (- 5)`

{By distributive property of multiplication}

=
`(8)/(5) x^(2)  - (16)/(5) xy + 4x` (Answer)

2)
`2y^(2)( (1)/(2) x + (2)/(6)y - 4z)`

=
`2y^(2) * ((1)/(2) x) + 2y^(2) * ( (2)/(6)y) - 2y^(2) * (4z)`

{By distributive property of multiplication}

=
`xy^(2) + (2)/(3)y - 8y^(2)z` (Answer)