Ex 12.3, 5 (vii) - Chapter 12 Class 8 Factorisation
Last updated at Dec. 16, 2024 by Teachoo
Dividing two polynomials
Dividing polynomial by polynomial
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Transcript
Ex 12.3, 5 Factorise the expressions and divide them as directed. (vii) 39๐ฆ^3(50๐ฆ^2 โ 98) รท 26๐ฆ^2 (5y + 7)We first factorise ใ39๐ฆใ^3 (50๐ฆ^2โ 98) = ใ39๐ฆใ^3 (2รใ25๐ฆใ^2 โ 2 ร 49) Taking 2 common = ใ39๐ฆใ^3ร2 (ใ25๐ฆใ^2โ49) = ใ78๐ฆใ^3 (ใ25๐ฆใ^2โ49) = ใ๐๐๐ใ^๐ [(ใ๐๐ใ^๐)โ(๐)^๐] = ใ78๐ฆใ^3 (5y โ 7) (5y + 7) Dividing 39๐ฆ^3(50๐ฆ^2 โ 98) รท 26๐ฆ^2 (5y + 7) = (39๐ฆ^3 (50๐ฆ^2 โ 98))/(26๐ฆ^2 (5๐ฆ + 7)) = (๐๐๐^๐ (๐๐ + ๐) (๐๐ โ ๐))/(๐๐๐^๐ (๐๐ + ๐)) = 78/26 ร ๐ฆ^3/๐ฆ^2 ร ((5๐ฆ + 7))/((5๐ฆ + 7)) ร (5y โ 7) = 3 ร y ร (5y โ7) = 3y (5y โ 7)
