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Write the coefficients of x^2 in each of the following:
(i) 2 + x^2+ x=
(ii) 2 – x^2+ x^3=
(iii) \frac{\pi}{2}x^2+x=
(iv) \sqrt{2}-1=
Answer variants:
0
2
\frac{\pi}{2}
1
-1
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