2. Write the coefficients of (x^2) in each of the following: (i) (2+x^2+x) (ii) (2-x^2+x^3) (iii) ({piover{2}}x^2+x) (iv) (sqrt 2x-1) (v) (x^{10}+y^3+t^{50}) Polynomials Exercise 2.1 Previous Next Class 9 Polynomials Exercise 2.1 1.…
1. Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer. (i) (4x^2-3x+7) (ii) (y^2+sqrt 2) (iii) (3sqrt t+tsqrt 2) …
3. Find: (i) ({2^{2over 3}}{2^{1over 5}}) (ii) (({1over {3^3}})^7) (iii) ({11^{1over 2}}over{11^{1over 4}}) (iv) ({7^{1over 2}}{8^{1over 2}}) Number Systems Exercise 1.5 Previous Next Class 9 Number Systems Exercise 1.5 1. Find: (i) (64^{1over 2}) (ii) (32^{1over 5}) …
2. Find: (i) (9^{3over 2}) (ii) (32^{2over 5}) (iii) (16^{3over 4}) (iv) (125^{-1over 3}) Number Systems Exercise 1.5 Previous Next Class 9 Number Systems Exercise 1.5 1. Find: (i) (64^{1over 2}) (ii) (32^{1over 5}) …
1. Find: (i) (64^{1over 2}) (ii) (32^{1over 5}) (iii) (125^{1over 3}) Number Systems Exercise 1.5 Previous Next Class 9 Number Systems Exercise 1.5 1. Find: (i) (64^{1over 2}) (ii) (32^{1over…
5. Rationalise the denominators of the following: (i) (1over{sqrt 7}) (ii) (1over{sqrt 7-sqrt 6}) (iii) (1over{sqrt 5+sqrt 2}) (iv) (1over{sqrt 7-2}) Number Systems Exercise 1.4 Previous Next Class 9 Number Systems Exercise 1.4 1. Classify the following numbers as…
4. Represent (sqrt {9.3}) on the number line. Number Systems Exercise 1.4 Previous Next Class 9 Number Systems Exercise 1.4 1. Classify the following numbers as rational or irrational: (i) (2-sqrt 5) (ii) ((3+sqrt{23})-sqrt{23}) (iii) ({2sqrt 7}over{7sqrt 7}) (iv) (1over…
3. Recall, π is defined as the ratio of the circumference (say c) of a circle to its diameter (say d). That is, (pi={cover d})· This seems to contradict the fact that π is irrational. How will you resolve this contradiction?…
2. Simplify each of the following expressions: (i) ((3+sqrt 3)(2+sqrt 2)) (ii) ((3+sqrt 3)(3-sqrt 3)) (iii) ((sqrt 5+sqrt 2)^2) (iv) ((sqrt 5-sqrt 2)(sqrt 5+sqrt 2)) Number Systems Exercise 1.4 Previous Next Class 9 Number Systems Exercise 1.4 1.…
1. Classify the following numbers as rational or irrational: (i) (2-sqrt 5) (ii) ((3+sqrt{23})-sqrt{23}) (iii) ({2sqrt 7}over{7sqrt 7}) (iv) (1over {sqrt 2}) (v) (2pi) Number Systems Exercise 1.4 Previous Next Class 9 Number Systems Exercise 1.4 1. Classify the following…
