Classify the following polynomials as polynomials in one-variable, two variables etc:
Classify the following polynomials as polynomials in one-variable, two variables etc:
(i) x2 -xy +7y2
(ii) x2 -2tx + 7t2 -x +t
(iii) t3 -3t2 +4t -5
(iv) xy +yz +zx
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(i) x2 -xy +7y2 is a polynomial in two variables x,y.
(ii) x2 -2tx + 7t2 -x +t is a polynomial in 2 variables x, t.
(iii) t3 -3t2 +4t -5 is a polynomial in 1 variables t.
(iv) xy +yz +zx is a polynomial in 3 variables x, y, z.
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