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)…
8. Factorise each of the following : (i) (8a^3+b^3+12a^2b+6ab^2) (ii) (8a^3-b^3-12a^2b+6ab^2) (iii) (27-125a^3-135a+225a^2) (iv) (64a^3-27b^3-144a^2b+108ab^2) (v) (27p^3-{1over 216}-{9over 2}p^2+{1over 4}p) Polynomials Exercise 2.4 Previous Next Class 9 Polynomials Exercise 2.4 1. Use suitable identities to find the following products: (i)…
7. Evaluate the following using suitable identities: (i) ((99)^3) (ii) ((102)^3) (iii) ((998)^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)…
