Question

$if \: x = \sqrt{2} - 1 \: what \: is \: the \: value \: of \: x - 1 \div x$
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Answer 1

Answer:

3(2-√2)

Step-by-step explanation:

X=√2-1

X-1÷x=

√2-1-1/√2-1

√2-2/√2-1

√2-2×(√2-1)/2-1

4-2√2-√2+2/1

6-3√2

3(2-√2)