Maths : Real Numbers : Book Back, Exercise, Example Numerical Question with Answers, Solution : Exercise 2.7: Rationalisation of Surds

**Exercise 2.7**

**1. Rationalise the denominator **

**2. Rationalise the denominator and simplify
**

**3. Find the value of a and
b if [√7 −2] / [√7
+2] = a√7 +b **

**4. If x =
√5 + 2, then find the value of x^{2} + [1/x^{2}]**

**5. Given √2 = 1.414 , find the value of [8 -5√2] / [3 -2√2] (to
3 places of decimals).**

Tags : Numerical Problems with Answers, Solution | Real Numbers | Maths , 9th Maths : UNIT 2 : Real Numbers

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9th Maths : UNIT 2 : Real Numbers : Exercise 2.7: Rationalisation of Surds | Numerical Problems with Answers, Solution | Real Numbers | Maths

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