Question

Plz help me get the right answer

Answer 1

Given:

Subtract
`-7x^2+1` from
`-2x^2-4x`.

To find:

The result after subtraction.

Solution:

Subtract
`-7x^2+1` from
`-2x^2-4x`. It canbe written as

`-2x^2-4x-(-7x^2+1)`

Using distributive property, we get

`=-2x^2-4x-(-7x^2)-(1)`

`=-2x^2-4x+7x^2-1`

On combining like terms, we get

`=(7x^2-2x^2)-4x-1`

`=5x^2-4x-1`

Therefore, the required expression after subtraction is
`5x^2-4x-1`.