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Ex 9.4, 1 (v) - Chapter 9 Class 8 Algebraic Expressions and Identities
Last updated at March 23, 2023 by Teachoo
Ex 9.4
Ex 9.4, 1 (i)
Ex 9.4, 1 (ii)
Ex 9.4, 1 (iii) Important
Ex 9.4, 1 (iv)
Ex 9.4, 1 (v) Important You are here
Ex 9.4, 1 (vi) Important
Ex 9.4, 2 (i)
Ex 9.4, 2 (ii) Important
Ex 9.4, 2 (iii)
Ex 9.4, 2 (iv) Important
Ex 9.4, 3 (i)
Ex 9.4, 3 (ii)
Ex 9.4, 3 (iii) Important
Ex 9.4, 3 (iv)
Ex 9.4, 3 (v) Important
Ex 9.4, 3 (vi)
Ex 9.4, 3 (vii) Important
Ex 9.4, 3 (viii)
Transcript
Ex 9.4, 1 Multiply the binomials. (v) (2𝑝𝑞 + 3𝑞^2 ) and (3𝑝𝑞 – 2𝑞^2 ) (2𝑝𝑞 + 3𝑞^2 )(3𝑝𝑞 – 2𝑞^2 ) = 2𝑝𝑞(3𝑝𝑞−2𝑞^2 )+3𝑞^2 (3𝑝𝑞−2𝑞^2 ) = (2𝑝𝑞×3𝑝𝑞)−(2𝑝𝑞×2𝑞^2 )+(3𝑞^2×3𝑝𝑞)−(3𝑞^2×2𝑞^2 ) = 6𝑝^2 𝑞^2−4𝑝𝑞^3+9𝑝𝑞^3−6𝑞^4 = 𝟔𝒑^𝟐 𝒒^𝟐+𝟓𝒑𝒒^𝟑−𝟔𝒒^𝟒
