Ex 12.2, 1 (viii) - Chapter 12 Class 8 Factorisation
Last updated at Dec. 16, 2024 by Teachoo
Factorisation using identities
Factorisation using identities
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Transcript
Ex 12.2, 1 Factorise the following expressions. (viii) 𝑎^4 + 2𝑎^2 𝑏^2 + 𝑏^4𝑎^4 + 2𝑎^2 𝑏^2 + 𝑏^4 Using (𝑎^𝑚 )^𝑛=𝑎^(𝑚 × 𝑛) ∴ (𝑎^2 )^2 = 𝑎^(2 × 2)=𝑎^4 = (𝑎^2 )^2+〖2𝑎〗^2 𝑏^2+(𝑏^2 )^2 = (𝒂^𝟐 )^𝟐+𝟐(𝒂^𝟐×𝒃^𝟐)+(𝒃^𝟐 )^𝟐 =(𝑎^2 )^2+(𝑏^2 )^2+2(𝑎^2×𝑏^2) Using (𝒙+𝒚)^𝟐=𝑥^2+𝑦^2+2𝑥𝑦 Here, 𝑥 = 𝑎^2 and y = 𝑏^2 = (𝒂^𝟐+𝒃^𝟐 )^𝟐
