Question

Which of the following statements is false?

Answer 1

B. FALSE

Explanation:

A.
`(8y^2+2)-(4-2y^2)`

We expand the brackets to get,

`=8y^2+2-4+2y^2`

Group like terms,

`=8y^2+2y^2+2-4`

Simplify,

`=10y^2-2`

TRUE

B.
`(y^2-7)+(2y+2)`

Rearrange the terms,

`=y^2+2y-7+2`

Simplify,

`=y^2+2y-5`

`(y^2-7)+(2y+2)\\e y^2-9`

FALSE

C

`(y^2-7)+(2y^2+3)`

Group like terms,

`=y^2+2y^2-7+3`

Simplify,

`=3y^2-4`

TRUE

D.
`(y^3-y)-(y^2+4)`

Expand brackets

`=y^3-y-y^2-4`

Rewrite in descending powers of y,

`=y^3-y^2-y-4`

TRUE