Class IX

Find the last regional factor of : (i) √27, 2√125
  1. √3
  2. √2
  3. 3
  4. 2
Find the value of 1 / (√3 +2 √2) , If √2 = 1.4 and √3 = 1.7
  1. 0.5
  2. 0.1
  3. 0.2
  4. 0.3
State , whether the following numbers are rational :
  1. (2+ √2)²
  2. (3+√3)²
  3. (√3 - √2)²
  4. (5 +√5) (5-√5)
Find the value of 1 / (√3 - √2) , If √2 = 1.4 and √3 = 1.7
  1. 3.5
  2. 3.6
  3. 3.1
  4. 3.15
Rationalise the denominator of 1/√2
  1. 1
  2. 2 / √2
  3. √2 / 2
  4. √2 / (2√2)
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