2. (Street Plan) : A city has two main roads which cross each other at the centre of the city. These two roads are along the North-South direction and East-West direction. All the other streets of the city run parallel…
1. How will you describe the position of a table lamp on your study table to another person? Coordinate Geometry Exercise 3.1 Previous Next Class 9 Coordinate Geometry Exercise 3.1 1. How will you describe the position of a table…
16. What are the possible expressions for the dimensions of the cuboids whose volumes are given below? (i) Volume : (3x^2-12x) (ii) Volume : (12ky^2+8ky-20k) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities…
15. Give possible expressions for the length and breadth of each of the following rectangles, in which their areas are given: (i) Area : (25a^2-35a+12) (ii) Area : (35y^2+13y-12) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1.…
14. Without actually calculating the cubes, find the value of each of the following: (i) ((-12)^3+(7)^3+(5)^3) (ii) ((28)^3+(-15)^3+(-13)^3) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x +…
13. If (x+y+z=0), show that (x^3+y^3+z^3=3xyz). Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x + 4) (x + 10) (ii) (x + 8) (x – 10) (iii)…
12. Verify that (x^3+y^3+z^3-3xyz=)({1over 2}(x+y+z))([(x-y)^2+(y-z)^2+(z-x)^2]) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x + 4) (x + 10) (ii) (x + 8) (x – 10) (iii) (3x…
11. Factorise : (27x^3+y^3+z^3-9xyz) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x + 4) (x + 10) (ii) (x + 8) (x – 10) (iii) (3x +…
10. Factorise each of the following : (i) (27y^3+125z^3) (ii) (64m^3-343n^3) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x + 4) (x + 10) (ii) (x +…
9. Verify : (i) (x^3+y^3=)((x+y)(x^2-xy+y^2)) (ii) (x^3-y^3=)((x-y)(x^2+xy+y^2)) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i) (x + 4) (x + 10) (ii) (x + 8) (x – 10)…
