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Part1 Add the following polynomials:
1) x + 3 and 3x – 4
2) x2 + 2x + 5 and 2x2 - x + 1
3) x2 + 5 and 3x2 - x
4) x + 5 and X - 5
5) x2 – 3x + 1 and 2x2 - x + 4​