Ответ:
а-b=6,ab=-4
(а-b)²= a²+b²-2ab =6², 2ab=2*(-4) =-8
a²+b²=36+2ab =36+(-8) =28
(a+b)²= a²+b²+2ab =28+(-8) =20
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Ответ:
а-b=6,ab=-4
(а-b)²= a²+b²-2ab =6², 2ab=2*(-4) =-8
a²+b²=36+2ab =36+(-8) =28
(a+b)²= a²+b²+2ab =28+(-8) =20