urgent answer plz now
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(a+b)²=a²+b²+2ab
(10)²=58+2ab
100-58=2ab
42=2ab
21=ab
a³+b³=(a+b)(a²+b²-ab)
a³+b³=(10)(58-21)
a³+b³=(10)(37)
a³+b³=370
(10)²=58+2ab
100-58=2ab
42=2ab
21=ab
a³+b³=(a+b)(a²+b²-ab)
a³+b³=(10)(58-21)
a³+b³=(10)(37)
a³+b³=370
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