Question

Prove that (√2 + 1) ( √2 – 1) = 1 , Use this to compute 1 / (√2 -1) correct to two decimal places .
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Answer 1

Answer:

(√2+1)(√2−1)

=1

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Answer 2

Answer:

• $( \sqrt{2} + 1)( \sqrt{2} - 1) = 1$
• Correcting to 2 decimal places = 2.41