Question

Can anyone help in solving this problem? `14u^3-7u^3-8u+4`

`14u^3-7u^3-8u+4`

Answer 1

The answer is `14u^4-7u^3-8u+4`.

Explanation:

The answer cannot be simplified further because the variables have different exponents. It could be simplified if you were given a value for `u`.

Answer 2

`f(u) = (2u - 1)(sqrt7 - 2)(sqrt7 + 2)`

Explanation:

The equation most likely should be:
`f(u) = 14u^3 - 7u^2 - 8u + 4`
Factor by grouping -->
`f(u) = 7u^2(2u - 1) - 4(2u - 1)`
`f(u) = (2u - 1)(7u^2 - 4) = (2u - 1)(sqrt7u - 2)(sqrt7 + 2)`