Example 14 (i) - Chapter 9 Class 8 Algebraic Expressions and Identities
Last updated at Sept. 8, 2021 by Teachoo
Transcript
Example 14 Use the Identity (π₯+π)(π₯+π)=π₯^2+(π+π)π₯+ππ to find the following: (i) 501 Γ 502 501 Γ 502 = (500+1)Γ(500+2) (π₯+π)(π₯+π)=π₯^2+(π+π)π₯+ππ Putting π₯ = 500 , π = 1 & π = 2 = (500)^2+(1+2)(500)+(1)(2) = 250000+(3Γ500)+2 = 250000+1500+2 = ππππππ
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