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# 1. Which expression is a cubic polynomial? 3x^2 - 1 x^3 - 1 x^2 - x + 3 3x^2 - x + 3 2.Which of the following binomials is a factor of x^3 + 4x^2 +x - 6? 3. If a polynomial equation p(x) = 0 has 3 + 4i as a solution, what other solutions must it have?

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1. A polynomial cubic is a polynomial of degree 3 (the degree of a polynomial is the highest degree among the terms), then the polynomial a cubic .2. The polynomial has the root x=1, then .3. If a polynomial equation p(x) = 0, 3 + 4i as a solution and has real coefficients, then 3-4i is also a solution.