Month: June 2024

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.

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

7. Evaluate the following using suitable identities: (i) ((99)^3) (ii) ((102)^3) (iii) ((998)^3) Polynomials Exercise 2.4 Previous Next

6. Write the following cubes in expanded form: (i) ((2x+1)^3) (ii) ((2a-3b)^3) (iii) ([{3over 2}x+1]^3) (iv) ([x-{2over 3}y]^3)

5. Factorise : (i) (4x^2+9y^2+16z^2+12xy-24yz-16xz) (ii) (2x^2+y^2+8z^2-2sqrt 2 xy+4sqrt 2  yz-8xz)  Polynomials Exercise 2.4 Previous Next Class 9

4. Expand each of the following, using suitable identities: (i) ((x+2y+4z)^2)  (ii) ((2x-y+z)^2) (iii) ((-2x+3y+2z)^2) (iv) ((3a-7b-c)^2)   

3. Factorise the following using appropriate identities: (i) (9x^2+6xy+y^2) (ii) (4y^2-4y+1) (iii) (x^2-{y^2over 100}) Polynomials Exercise 2.4 Previous

2. Evaluate the following products without multiplying directly: (i) 103 × 107 (ii) 95 × 96 (iii) 104

1. Use suitable identities to find the following products: (i) (x + 4) (x + 10) (ii) (x