Let P2 be the vector space of all polynomials of degree 2 or less, and let H be the subspace spanned by 3x² - 2x - 1, 12x²-6x - 5 and 22x 45x2+ 19. - a. The dimension of the subspace H is ☐. b. Is {3x² - 2x 1, 12x²-6x-5, 22x45x² + 19} a basis for P2? choose - Be sure you can explain and justify your answer. c. A basis for the subspace H is { ☐ }. Enter a polynomial or a comma separated list of polynomials.

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