1. Factor the expression 3X^3+4X^2-15X-20 Show your work
2.Solve the equation p^2+4p=1 by completing the square. Show your work
3. Multiply the polynomials (a^2+3a-7) and (2a^2-a+4) Simplify the answer. Show your work.

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[tex]3 {x}^{3} - 15x + 4 {x}^{2} - 20[/tex]
[tex]3x( {x}^{2} - 5) + 4( {x}^{2} - 5)[/tex]
[tex]( {x}^{2} - 5)(3x + 4)[/tex]
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