Which of the following represents the difference of the polynomials below?

(9x^3+2x+11)-(6x^3+4x^2+3x+1)

•A. 9x^3+4x^2-x+12
•B. -3x^3-4x^2-x+12
•C. -3x^3-4x^2-x+10
•D. 3x^3+4x^2-x+12

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

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