What is the value of x

What is the standard form of -5x^2+2x^4-11+x^3+3x

The equation |pl = 2 represents the total number of points that can be earned or lost during one turn of a game. which best describes how many points can be earned or lost during one turn? o o -2 2 oor 2 -2 or 2 o

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b