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Find the sum: (x7 + 2x5 - 5x3 + 17x) + (x6 - 2x4 - x2 + 17).
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Find the sum: (x7 + 2x5 - 5x3 + 17x) + (x6 - 2x4 - x2 + 17).

User MTM
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(x^7 + 2x^5 - 5x^3 + 17x) + (x^6 - 2x^4 - x^2 + 17)\\\\=x^7 + 2x^5 - 5x^3 + 17x + x^6 - 2x^4 - x^2 + 17\\\\=x^7+x^6+2x^5-2x^4-5x^3-x^2+17x+17
User Ilya Loskutov
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