Integral exponents

You can not simplify expressions that do not contain like terms because if a equation don't have like terms it will stay the same for Ex 2k + 2n = 2k + 2n. x^2y and xy^2 are not like terms because y is being times by it self and x^2y is not because x is being times by it self. No xy is not the same thing as xyz because it does not have the same variable, so we can't combine them. The power of m is 7th power.The base is m. The negative base is a negative variable.