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Ex 8.4, 1 (vi) - 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 You are here
Ex 8.4, 2 (i)
Ex 8.4, 2 (ii) Important
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, 1 Multiply the binomials. (vi) (3/4 𝑎^2+3𝑏^2 ) and 4(𝑎^2−2/3 𝑏^2 ) (3/4 𝑎^2+3𝑏^2 )×4(𝑎^2−2/3 𝑏^2 ) = (3/4 𝑎^2+3𝑏^2 )×[(4×𝑎^2 )−(4×2/3 𝑏^2 )] = (3/4 𝑎^2+3𝑏^2 )×(4𝑎^2−8/3 𝑏^2 ) = 3/4 𝑎^2 (4𝑎^2−8/3 𝑏^2 )+3𝑏^2 (4𝑎^2−8/3 𝑏^2 ) = (𝟑/𝟒 𝒂^𝟐 × 𝟒𝒂^𝟐 )−(𝟑/𝟒 𝒂^𝟐×𝟖/𝟑 𝒃^𝟐 )+(𝟑𝒃^𝟐×𝟒𝒂^𝟐 )−(𝟑𝒃^𝟐×𝟖/𝟑 𝒃^𝟐 ) = 3𝑎^4−2𝑎^2 𝑏^2+12𝑏^2 𝑎^2−8𝑏^4
