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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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