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Using the identity. (a - b) ²= (a² - 2ab + b²), evaluate 699²​
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Using the identity. (a - b) ²= (a² - 2ab + b²), evaluate 699²​

User Petrik
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\\ \sf\longmapsto 699^2


\\ \sf\longmapsto (700-1)^2


\\ \sf\longmapsto 700^2-2(700(1)+(1)^2


\\ \sf\longmapsto 490000-1400+1


\\ \sf\longmapsto 488600+1


\\ \sf\longmapsto 488601

User Mark Galeck
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5 votes

Explanation:

hope it helps you.......

Using the identity. (a - b) ²= (a² - 2ab + b²), evaluate 699²​-example-1
User TelJanini
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