Question

(5a^2+6a+2)-(7a^2-7a-5)

Answer 1

For this case we must simplify the following expression:
`(5a^ 2 + 6a + 2) - (7a^ 2-7a-5) =`

We eliminate the parentheses taking into account that:

`- * + = -\\- * - = +`

So:

`5a ^ 2 + 6a + 2-7a ^ 2 + 7a + 5 =`

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

`5a ^ 2-7a^2 + 6a + 7a +2 +5 =\\-2a ^ 2 + 13a + 7`

Answer:

`-2a ^ 2 + 13a + 7`