what is the degree of
-10x^3 + 6xyz + 8x^3y?
The degree of a term is the sum of the exponents of the variables in that term.
For the term -10x^3, the degree is 3 because the exponent of x is 3.
For the term 6xyz, the degree is 1+1+1 = 3 because the exponents of x, y, and z are all 1.
For the term 8x^3y, the degree is 3+1 = 4 because the exponents of x and y are 3 and 1 respectively.
Therefore, the highest degree among the terms is 4. So the degree of the expression is 4.