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(B) Given expression is $E = \frac{(1 + x)^{1/2} + (1 - x)^{2/3}}{1 + x + (1 + x)^{1/2}}$.Using binomial expansion $(1 + x)^n \approx 1 + nx$ for smal

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$1 - \frac{5}{6}x$

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(B) Given expression is $E = \frac{(1 + x)^{1/2} + (1 - x)^{2/3}}{1 + x + (1 + x)^{1/2}}$.Using binomial expansion $(1 + x)^n \approx 1 + nx$ for small $x$:$(1 + x)^{1/2} \approx 1 + \frac{1}{2}x$$(1 - x)^{2/3} \approx 1 - \frac{2}{3}x$Substituting these into the expression:$E \approx \frac{(1 + \frac{1}{2}x) + (1 - \frac{2}{3}x)}{1 + x + (1 + \frac{1}{2}x)}$$E \approx \frac{2 - \frac{1}{6}x}{2 + \frac{3}{2}x} = \frac{2(1 - \frac{1}{12}x)}{2(1 + \frac{3}{4}x)}$$E \approx (1 - \frac{1}{12}x)(1 + \frac{3}{4}x)^{-1}$Using $(1 + z)^{-1} \approx 1 - z$:$E \approx (1 - \frac{1}{12}x)(1 - \frac{3}{4}x)$$E \approx 1 - \frac{3}{4}x - \frac{1}{12}x = 1 - (\frac{9+1}{12})x = 1 - \frac{10}{12}x = 1 - \frac{5}{6}x$.

If the value of $x$ is so small that $x^2$ and higher powers can be neglected,then $\frac{\sqrt{1 + x} + \sqrt[3]{(1 - x)^2}}{1 + x + \sqrt{1 + x}}$ is equal to

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