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

asked Dec 25, 2022 213k views

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$\\ \sf\longmapsto 699^2$

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

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

$\\ \sf\longmapsto 490000-1400+1$

$\\ \sf\longmapsto 488600+1$

$\\ \sf\longmapsto 488601$

Mark Galeck answered Dec 27, 2022

4.6k points

5 votes

Explanation:

hope it helps you.......

TelJanini answered Jan 1, 2023

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