To evaluate the integral -dx-x-x2-2x-4- a good substitution is-are -x2-2x-4 equal to-

The correct options are A tx+2 B t+x D t x In x^2+2x+4 , a=1 gt; 0 , c=4 gt; 0 So the integral can be evaluated by using sub ...

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To evaluate t...

Question

To evaluate the integral $\int \frac{d x}{x - \sqrt{x^{2} + 2 x + 4}}$ , a good substitution is/are $\sqrt{x^{2} + 2 x + 4}$ equal to:

t x + 2

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t + x

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t (x + 1) \pm 1

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t - x

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