POLYNOMIALS-EX-2.3-Q28, Q29, Q30 AND Q31- NCERT MATHS EXEMPLAR SOLUTIONS-CLASS-9

POLYNOMIALS-EX-2.3-Q28, Q29, Q30 AND Q31- NCERT MATHS EXEMPLAR SOLUTIONS-CLASS-9 EX-2.3 Question 28: Expand the following (i) (4a-b + 2c)2 (ii) (3a – 5b – c)2 (iii) (-x + 2y- 3z)2 Question 29: Factorise the following (i) 9x2 + 4y2 + 16z2 +12xy -16yz -24xz (ii) 25x2 + 16y2 + 4z2 – 40xy + 16yz – 20xz iii) 16x2 + 4y2 + 9z2 – 16xy – 12yz + 24xz Question 30: If a + b + c = 9 and ab + bc + ca = 26, find a2 + b2 +c2. Question 31: Expand the following ex-2.3,ex-2.3 question -18,ncert exemplar ex-2.3,solution of ex-2.3 q35,ex-2.3 ncert exemplar maths,ncert exemplar chapter-2 ex-2.3,ex 2.3,ex.2.3,2023-24,polynomials class 9 ncert exemplar exercise-2.3,exercise 2.3,2.3 exemplar,2.3 exemplar q 5,exercise 2.3 live,ncert maths ex 2.3,ex 2.3 class 9 maths,ncert class 9 ex 2.3,ex 2.3 class 9 exemplar,ex 2.3 solution class 9,chapter 2 exercise 2.3,class 9 chapter 2 ex 2.3,class9 math exercise 2.3