Question

if x=√2-1 find (x-1÷x)×3

Answer 1

slotuion of ur ans is......

Answer 2

⇒ x-1=√2 - 2
  { (√2 - 2)÷(√2 -1)}×3
After rationalizing,
⇒[{(√2 -2)(√2 +1)}÷{(√2 -1)(√2 +1)}]×3
⇒ {(2+√2 -2√2 -2)÷(2-1)}3
⇒(-√2)3
⇒-3√2