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Write the coefficients of x^2in each of ...

Write the coefficients of `x^2`in each of the following:
(i) `2+x^2+x`
(ii) `2-x^2+x^3`
(iii) `pi/2x^2+x`
(iv) `sqrt(2)x-1`

Text Solution

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Coefficient of `x^2` in `ax^2+bx+c=0` is `a`.
Hence, coefficients of `x^2` in
(i) `2+x^2+x` is `1`.
(ii) `2−x^2+x^3` is `−1`.
(iii) `(pi/2) x^2+x` is `pi/2`.
(iv) `sqrt(2) x−1` is `0`.
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