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Mathematics, 22.05.2021 14:00 cheyenne481

Find the sum of each of the following polynomials. a) x^3+5x^2+2, 3x^2-4x+7
b) 2x + 5x^3-2x^2+7, 9+4x-5x^2-2x^3
c) 5x^3+2x^2+4, 2x^2+7x-5, 7-5x^2 +3x-4x^3
d) 2x^4-3x^2+4x^3-5, 9x^2-7x^3-2x^4, 7-x+3x^4

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