What is the sum of the polynomials? open paren negative x squared plus 9 close paren plus open paren negative 3 x squared minus 11 x plus 4 close paren

Combine like terms: the squared terms add to −x² − 3x² = −4x², the linear term is −11x, and the constants add to 9 + 4 = 13. The sum is −4x² − 11x + 13, which is choice A.

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