(2²+4²+...+100²)-(1²+3²+...+99²) =( )
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![(2²+4²+...+100²)-(1²+3²+...+99²) =( )](/uploads/image/z/1673230-22-0.jpg?t=%282%26%23178%3B%2B4%26%23178%3B%2B...%2B100%26%23178%3B%29-%281%26%23178%3B%2B3%26%23178%3B%2B...%2B99%26%23178%3B%EF%BC%89+%3D%EF%BC%88+%EF%BC%89)
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(2²+4²+...+100²)-(1²+3²+...+99²) =( )
(2²+4²+...+100²)-(1²+3²+...+99²) =( )
(2²+4²+...+100²)-(1²+3²+...+99²) =( )
=100²-99²+98²-97²+……+2²-1²
=(100+99)(100-99)+(98+97)(98-97)……+(2+1)(2-1)
=100+99+98+97+……+2+1
=5050