III NEEDDD HEELLLPPPPPPPPPP!!!!!!!!! IVE TRIED ASKING THIS TWICE AND IVE BEEN WAISTING POINNNTTSSSSS!!!!!! WILLL MARK BRAINLIESTTTTT PLLLEEAASSEE HEELLLLPPPP!!!!!!!!

Select the expressions (more than one) that are polynomials.
options:


−2x^3+2x+4



x^2/7+1



x^−3+4x



6x−x^3+4x^2