Предмет: Алгебра, автор: ulya200018

чему равно значение выражения a^+b^2 если a+b=8 а ab=2

Ответы

Автор ответа: cjvth99
2

Ответ: 60

a^2+b^2 = (a+b)^2 - 2ab = 8^2 - 2*2 = 64 - 4 = 60

Автор ответа: Mydrый
4
а+в=8
(а+в)²=8²
а²+2ав+в²=64
а²+в²=64-2ав
ав=2, подставим
а²+в²=64-2*2=64-4=60


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