Learn all Concepts of Polynomials Class 9 (with VIDEOS). Check - Polynomials Class 9

Last updated at May 29, 2018 by Teachoo
Transcript
Ex 2.5, 15 Give possible expressions for the length and breadth of each of the following rectangles, in which their areas are given: (i) Area : 25a2 – 35a + 12 First we factorize 25a2 – 35a + 12 We factorize using the splitting the middle term method = 25a2 – 15a – 20a + 12 = 5a(5a – 3) – 4(5a – 3) = (5a – 3) (5a – 4) Hence, Area = (5a – 3) (5a – 4) Area = Length × Breadth Hence, there are two possibilities Ex 2.5, 15 Give possible expressions for the length and breadth of each of the following rectangles, in which their areas are given: (ii) Area : 35y2 + 13y – 12 First we factorize 35y2 + 13y – 12 We factorize using the splitting the middle term method = 35y2 + 28y – 15y – 12 = 7y(5y + 4) – 3 (5y + 4) = (5y + 4) (7y – 3) Hence, Area = (5y + 4) (7y – 3) Area = Length × Breadth Hence, there are two possibilities
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
Ex 2.5,14 Not in Syllabus - CBSE Exams 2021
Ex 2.5, 15 You are here
Ex 2.5,16 Important
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