Learn all Concepts of Polynomials Class 9 (with VIDEOS). Check - Polynomials Class 9
Last updated at Nov. 17, 2020 by Teachoo
Transcript
Ex 2.5, 13 If x + y + z = 0, show that x3 + y3 + z3 = 3xyz . We know that x3 + y3 + z3 3xyz = (x + y + z) (x2 + y2 + z2 xy yz zx) Putting x + y + z = 0, x3 + y3 + z3 3xyz = (0) (x2 + y2 + z2 xy yz zx) x3 + y3 + z3 3xyz = 0 x3 + y3 + z3 = 3xyz Hence proved
Ex 2.5
Ex 2.5,2 Important
Ex 2.5,3 Important
Ex 2.5,4 Important
Ex 2.5,5 Important
Ex 2.5,6
Ex 2.5,7 Important
Ex 2.5,8
Ex 2.5,9 Not in Syllabus - CBSE Exams 2021
Ex 2.5,10 Important Not in Syllabus - CBSE Exams 2021
Ex 2.5, 11 Important
Ex 2.5,12 Not in Syllabus - CBSE Exams 2021
Ex 2.5,13 Not in Syllabus - CBSE Exams 2021 You are here
Ex 2.5,14 Not in Syllabus - CBSE Exams 2021
Ex 2.5, 15
Ex 2.5,16 Important
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