Evaluate: \(\rm \int\frac{x^2}{(x\sin x+\cos x)^2}dx\)

1
\(\rm \frac{-x\sec x}{x\sin x +\cos x}+\tan x+c\)
2
\(\rm \frac{-x\sec x}{x\sin x +\cos x}-\tan x+c\)
3
\(\rm \frac{x\sec x}{x\sin x +\cos x}+\tan x+c\)
4
None of these

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