Answer
(1) $-(-x^3-5x^2+2x)$
(2) $x^3+5x^2-2x$
Work Step by Step
Two expressions equivalent to the opposite of a polynomial can be found by:
(1) taking the negative of the polynomial; and
(2) changing the sign of each term of the polynomial
Thus, two expressions equivalent to the opposite of the given polynomial are:
(1) $-(-x^3-5x^2+2x)$
(2) $x^3+5x^2-2x$