Question:
Write the coefficients of $x^{2}$ in each of the following
1. $17-2 x+7 x^{2}$
2. $9-12 x+x^{2}$
3. $\frac{\pi}{6} x^{2}-3 x+4$
4. $\sqrt{3} x-7$
Solution:
Given, to find the coefficients of $x^{2}$
1. $17-2 x+7 x^{2}$ - the coefficient is 7
2. $9-12 x+x^{2}-$ the coefficient is 0
3. $\frac{\pi}{6} x^{2}-3 x+4$ - the coefficient is $\pi / 6$
4. $\sqrt{3} x-7$ - the coefficient is 0