Question

solve for positive exponents
-20x^3y^4
80x^2y^-1

Answer 1

is there division...?

Answer 2

there is a line in between

Answer 3

-20/80 = 1/4
x^3/x^2 = x
y^4/y^-1 = y^5
so, your answer should be:
(-1/4) *x*y^5