CBSE Class 9 maths solutions Number systems Ex 1.5 | NCERT Class 9 maths solutions

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05:38 (iii) MULTIPLYING RADICALS

06:54 (iv) Product of irrational numbers.

Q3. Recall, p is defined as the ratio of the circumference (say c) of a circle to its diameter (say d). That is, c/d = pi.This seems to contradict the fact that p is irrational. How will you resolve this contradiction?

Q4. Represent sqrt(9.3) on the number line.

08:09 Q5. Rationalise the denominators of the following:

08:20 (i) Rationalise the denominator of irrational 1 / sqrt(7)

09:22 rationalising factor of surd 1/sqrt(7)

09:43 (ii) Rationalise the denominator of irrational 1 / (sqrt(7)-sqrt(6))

10:17 rationalising factor of surd 1 / (sqrt(7)-sqrt(6))

12:38 (iii)Rationalisation Of A Surd / Radical '1 / (sqrt(5)+sqrt(2))'

13:04 rationalising factor of surd '1 / (sqrt(5)+sqrt(2))'

15:04 (iv) Rationalise the denominator of irrational 1 / sqrt(7)-2

15:30 rationalising factor of Radical

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