Which polynomials are in standard form?

choose all answers that apply:

(choice a)

3z-1

(choice b)

2+4x-5x^2

(choice c)

-5p^5+2p^2-3p+1

(choice d)

none of the above

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle