Write the coefficient of x2 in each of the following:

(i) 17 – 2x + 7x2


(ii) 9-12x+x3


(iii) x2 – 3x + 4


(iv) x-7

Coefficient of x2 in:

(i) 17 – 2x + 7x2 is 7


(ii) 9-12x+x3 is 0


(iii) x2 – 3x + 4 is


(iv) x-7 is 0


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