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Detirmine whether each following is a poloynomial or not.whrite p if it is a polynomial and np if it is not polynomial whrite your answer in separate paper
1 -3x² - 4x + 1
2. 7X⁴+ 2x + 4
3. x¼ + 3x=7
4. 3x² - 4 / 2x + x
5. 4x³ + 2x - 6
6. 23x²+14xy+7y2​