How do you determine the signs?

I know these wouldn't work but look at the signs

m2 - 18m - 81

Could you do plus a negative and make them all plus signs? Its the signs im stuck on ugh;(

Determining the signs in an algebraic expression involves considering the operations (addition and subtraction) and the coefficients (numbers multiplied by variables) in the expression.

In the expression m^2 - 18m - 81, the signs are determined by the operation between each term. Let's break it down:

1. m^2: This term has no explicit sign in front of it. By convention, if no sign is written, it is assumed to be positive.

2. -18m: The negative sign in front of 18m indicates subtraction. So, this term is negative.

3. -81: Again, the negative sign indicates that this term is negative.

Now, about your question: "Could you do plus a negative and make them all plus signs?"

No, you cannot change the signs in the expression m^2 - 18m - 81 in a way that makes all the terms positive. In this case, the negative signs are integral parts of the expression and indicate subtraction. Changing them to positive signs would alter the meaning of the expression and the mathematical operation it represents.

If you are uncertain about the signs in an expression, it might be helpful to write it using parentheses or brackets. For example:

m^2 - 18m - 81 can be rewritten as (m^2) + (-18m) + (-81),

This notation can make it clearer that the two terms with negative signs indicate subtraction.