Ответ:
a (12;-16)
|a|= √x²+y²
|a|=√12²+(-16)²=√144 + 256=√400=20
|a|=20
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Ответ:
a (12;-16)
|a|= √x²+y²
|a|=√12²+(-16)²=√144 + 256=√400=20
|a|=20