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in Polynomials by (26.3k points)
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Classify the following polynomials as polynomials in one-variable, two variable etc:

(i) x2 - xy + 7y2 

(ii) x2 - 2tx + 7y2 - x + t 

(iii) t3 - 3t2 + 4t - 5 

(iv) xy + yz + zx

1 Answer

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Best answer

(i) x2 - xy + 7y2 is a polynomial in two variable x, y.

(ii) x2 - 2tx + 7y2 - x + t is a polynomial in two variable x, t.

(iii) t3 - 3t2 + 4t - 5 is a polynomial in one variable t.

(iv) xy + yz + zx is a polynomial in three variable x, y, t.

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