If g(x) = 1 + x and fg (x) = 3 + 2 x + x , then f(x)= - Vidyadip

MCQ

If $ \text{g}(\text{x}) = 1 +\sqrt{\text{x}}$ and $ \text{fg} (\text{x}) = 3 + 2\sqrt{\text{x} +\text{ x}},$ then $\text{f}(\text{x})=$

A
$1+2 x^2$
✓
$2+x^2$
C
$1+\mathrm{x}$
D
$2+x$

✓

Answer

Correct option: B.

$2+x^2$

$2+x^2$

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