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Algebra Identities - Identity III
Last updated at May 29, 2023 by Teachoo
Question 7 Using 𝑎^2−𝑏^2=(𝑎+𝑏)(𝑎−𝑏) , find (i) 〖51〗^2−〖49〗^2 〖51〗^2−〖49〗^2 𝑎^2−𝑏^2=(𝑎+𝑏)(𝑎−𝑏) Putting 𝑎 = 51 & 𝑏 = 49 = (51+49)×(51−49) = 100×2 = 𝟐𝟎𝟎