-2x - 2√x(1+x)
1 + 2x + 2√x(1+x)
√x(1+x)
1 + 2x - 2√x(1+x)
Correct answer is B
√1+x+√x√1+x−√x
= (√1+x+√x√1+x−√x)(√1+x+√x√1+x+√x)
= (1+x)+√x(1+x)+√x(1+x)+x(1+x)−x
= 1+2x+2√x(1+x)1
= 1+2x+2√x(1+x)
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