Let p2 be the vector space of all polynomials of degree 2 or less, and let h be the subspace spanned by 10x2+4x−1, 3x−4x2+3, and 5x2+x−1. the dimension of the subspace h is . is {10x2+4x−1,3x−4x2+3,5x2+x−1} a basis for p2? be sure you can explain and justify your answer. a basis for the subspace h is { }. enter a polynomial or a comma separated list of polynomials.