1.

Let `f(x)` be a quadratic polynomial with `f(2)=-2`. Then the coefficient of `x` in `f(x)` is-A. 1B. 2C. 3D. 4

Answer» Correct Answer - C
say `f(x)=ax^(2)+bx+c`
`f(x)=ax^(2)+bx+c`
`f(2)=4a+2b+c=10`
`f(-2)=4a-2b+c=-2`
`implies4b=12`
b=3


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