Ответ:
a) x^2-5x-84=0
D=25+336=361
x1=12
x2=-7
(x+a)(x+b)=(-7+a)(-7+b)
a=b=7
б) P=7+7+7+7=28
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Ответ:
a) x^2-5x-84=0
D=25+336=361
x1=12
x2=-7
(x+a)(x+b)=(-7+a)(-7+b)
a=b=7
б) P=7+7+7+7=28