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Mathematics 23 Online
OpenStudy (anonymous):

1.(3x^2+5x-4)+(-2x^3+x^2+9x) 2.(-8x^2-x+1)-(7x^2-5x+1) 3.(4x^3-8x^2+2)-(x^3+x^2-6x+5) 4.(-x^2-3x+7)+(x^2+4x-9) 5.(2x^3-2x^2+1)+(-x^3+9x+5) 6.(3x^2-5x-10)-(5x^3+x-2)

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