Select all of the equations that are true

What’s the answer ? use the picture to see the problem

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y

Rewrite the expression in z to the n power. the expression i was given is: 1 over z to the negative 1 half power.