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Ex 8.4, 2 (ii) - Chapter 8 Class 8 Algebraic Expressions and Identities
Last updated at July 24, 2023 by Teachoo
Ex 8.4
Ex 8.4, 1 (i)
Ex 8.4, 1 (ii)
Ex 8.4, 1 (iii) Important
Ex 8.4, 1 (iv)
Ex 8.4, 1 (v) Important
Ex 8.4, 1 (vi) Important
Ex 8.4, 2 (i)
Ex 8.4, 2 (ii) Important You are here
Ex 8.4, 2 (iii)
Ex 8.4, 2 (iv) Important
Ex 8.4, 3 (i)
Ex 8.4, 3 (ii)
Ex 8.4, 3 (iii) Important
Ex 8.4, 3 (iv)
Ex 8.4, 3 (v) Important
Ex 8.4, 3 (vi)
Ex 8.4, 3 (vii) Important
Ex 8.4, 3 (viii)
Chapter 8 Class 8 Algebraic Expressions and Identities
Serial order wise
Transcript
Ex 8.4, 2 Find the product. (ii) (𝑥+7𝑦) (7𝑥−𝑦) (𝑥+7𝑦) (7𝑥−𝑦) = 𝑥(7𝑥−𝑦)+7𝑦(7𝑥−𝑦) = (𝒙 × 𝟕𝒙)−(𝒙 × 𝒚)+(𝟕𝒚 × 𝟕𝒙)−(𝟕𝒚 × 𝒚) = 7𝑥^2−𝑥𝑦+49𝑦𝑥−7𝑦^2 = 𝟕𝒙^𝟐+𝟒𝟖𝒙𝒚−𝟕𝒚^𝟐
