Chapter 2 – Polynomials
14. Without actually calculating the cubes, find the value of each of the following: (i) (−12)^3 + (7)^3 + (5)^3
15
Oct
14. Without actually calculating the cubes, find the value of each of the following: (i) (−12)^3 + (7)^3 + (5)^3 14. Without actually calculating the cubes find the value of each of the following: (i) (−12)^3 + (7)^3 + (5)^3 October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
13. If x+y+z = 0, show that x^3 + y^3 + z^3 = 3xyz.
15
Oct
13. If x+y+z = 0, show that x^3 + y^3 + z^3 = 3xyz. 13. If x+y+z = 0 show that x^3 + y^3 + z^3 = 3xyz. October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
12. Verify that: x^3 + y^3 + z^3 – 3xyz = (1/2) (x+y+z)[(x–y)^2+(y–z)^2+(z–x)^2]
15
Oct
12. Verify that: x^3 + y^3 + z^3 – 3xyz = (1/2) (x+y+z)[(x–y)^2+(y–z)^2+(z–x)^2] 12. Verify that: x^3 + y^3 + z^3 – 3xyz = (1/2) (x+y+z)[(x–y)^2+(y–z)^2+(z–x)^2] October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
11. Factorise: 27x^3 + y^3 + z^3 – 9xyz
15
Oct
11. Factorise: 27x^3 + y^3 + z^3 – 9xyz 11. Factorise: 27x^3 + y^3 + z^3 – 9xyz October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
10. Factorise each of the following: (ii) 64m^3 – 343n^3
15
Oct
10. Factorise each of the following: (ii) 64m^3 – 343n^3 10. Factorise each of the following: (ii) 64m^3 – 343n^3 October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
10. Factorize each of the following: (i) 27y^3+125z^3
15
Oct
10. Factorize each of the following: (i) 27y^3+125z^3 10. Factorize each of the following: (i) 27y^3+125z^3 October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
9. Verify: (ii) x^3–y^3 = (x–y)(x^2+xy+y^2)
15
Oct
9. Verify: (ii) x^3–y^3 = (x–y)(x^2+xy+y^2) 9. Verify: (ii) x^3–y^3 = (x–y)(x^2+xy+y^2) October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
9. Verify: (i) x^3+y^3 = (x+y)(x^2–xy+y^2)
15
Oct
9. Verify: (i) x^3+y^3 = (x+y)(x^2–xy+y^2) 9. Verify: (i) x^3+y^3 = (x+y)(x^2–xy+y^2) October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
8. Factorise each of the following: (v) 27p^3–(1/216)−(9/2) p^2+(1/4)p
15
Oct
8. Factorise each of the following: (v) 27p^3–(1/216)−(9/2) p^2+(1/4)p 8. Factorise each of the following: (v) 27p^3–(1/216)−(9/2) p^2+(1/4)p October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,
8. Factorise each of the following: (iv) 64a^3–27b^3–144a^2b+108ab^2
15
Oct
8. Factorise each of the following: (iv) 64a^3–27b^3–144a^2b+108ab^2 8. Factorise each of the following: (iv) 64a^3–27b^3–144a^2b+108ab^2 October 15, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class 9 ,