Question

Take -4 + 3a^2 from 7a - a^2.

Answer 1

hint:
`\bf (7a-a^2)-(-4 + 3a^2)\implies 7a - a^2+4-3a^2 \\ \quad \\ 7a \boxed{-3a^2- a^2}+4\impliedby \textit{add like-terms}`

Answer 2

`-4a^2+7a+4`

Explanation:

We are asked to take
`-4+3a^2` from
`7a-a^2`.

Taking
`-4+3a^2` from
`7a-a^2` means subtracting
`-4+3a^2` from
`7a-a^2` as:

`7a-a^2-(-4+3a^2)`

Use distributive property:

`7a-a^2+4-3a^2`

Combine like terms:

`-3a^2-a^2+7a+4`

`-4a^2+7a+4`

Therefore, our required expression would be
`-4a^2+7a+4`.