Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Algebra Identities and Formulas
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Last updated at May 29, 2023 by Teachoo
Question 3 Find the following squares by using the identities. (vi) (2𝑥𝑦+5𝑦)^2 (2𝑥𝑦+5𝑦)^2 (𝑎+𝑏)^2=𝑎^2+𝑏^2+2𝑎𝑏 Putting 𝑎 = 2𝑥𝑦 & 𝑏 = 5𝑦 = (2𝑥𝑦)^2+(5𝑦)^2+2(2𝑥𝑦)(5𝑦) = (2^2×𝑥^2×𝑦^2 )+(5^2×𝑦^2 )+(2×2×5)×𝑥×(𝑦×𝑦) = 𝟒𝒙^𝟐 𝒚^𝟐+𝟐𝟓𝒚^𝟐+𝟐𝟎𝒙𝒚^𝟐