Write out all 4-degree monomials with coefficients of - 2 and only letters A and B
-2ab³
-2a²b²
-2b³a
There are three
Write out all the quartic monomials whose coefficients are 1 / 2 and all contain the letters X and Y without other letters
1/2 xy^3
1/2 x^2y^2
1/2 x^3y
Write all the monomials with AB, coefficient - 2 and degree 3
-2a²b,-2ab²