Which of the following is not a polynomial?
(i). 2 – x^3
(ii). y^3 – 4y + 6
x + 1/x
xy + yz + zx
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Answer:1. Which of the following expressions are polynomials in one variable and which are not? ... The highest exponent of x is 3. ∴ The degree of the polynomial is 3. (ii) 4 – y2 ... The value of 5x – 4x2 + 3 at x = –1 is –6. ... (x + 1) is not a factor of x4 + 3x3 + 3x2 +x +1. ... x2 + 4y2 + 16z2 + 4xy + 16yz + 8zx ... xy – yz – zx), we have.
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