Question

If x= root 2 -1 then 1/x is?​

Answer 1

Step-by-step explanation:

1/√2-1

1/(√2-1)× (√2+1)/(√2+1)

(√2+1)/{(√2)²-1²}

(√2+1)/(2-1)

(√2+1)/1

√2+1

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