Question

what is the simlified value
pls help me. someone pls Help me​

Answer 1

Answer:

2

Step-by-step explanation:

$\frac{1}{ \sqrt{2} + 1 } \\ \\ = \frac{1}{ (\sqrt{2} + 1) } \times \frac{( \sqrt{2} - 1) }{( \sqrt{2} - 1) } \\ \\ = \frac{ \sqrt{2 } - 1}{ { \sqrt{2} }^{2} - {1}^{2} } = \frac{ \sqrt{2} - 1}{1} = \sqrt{2} - 1$

$so \: \: \sqrt{2} - 1 + 3 - \sqrt{2} \\ = - 1 + 3 + \sqrt{2} - \sqrt{2} \\ = 2 + 0 = 2$

Answer 2

Answer:

answer is 4

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