Question

NEED HELP WITH combining like terms- 6 - 7m² + 4n²- 8 - 9m²- n²

will raise pts if does not get answered

Answer 1

`6 - 7m^2 + 4n^2- 8 - 9m^2- n^2=-16m^2+3n^2-2`

Answer 2

Is that a -6 at the start? Let's assume so.

`-6-7m^2 + 4n^2 - 8 - 9m^2 - n^2`

We first group the like terms (same powers of the variables) together:

`= (-6-8) +(-7m^2- 9m^2) + (4n^2 - n^2)`

Now we can add the like terms, kinda like we can add fractions with a common denominator:

`= -14 -16m^2 + 3n^2`

That's the answer.