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567Anton8643
@567Anton8643
July 2022
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Произведение корней уравнения (x+1) в 4 степени - 8(x+1)во 2 степени=9 равно
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sedinalana
Verified answer
(x+1)²=a
a²-8a-9=0
a1+a2=8 U a1*a2=-9
a1=-1⇒(x+1)²=-1 нет решения
a2=9⇒(x+1)²=9
x+1=-3 U x+1=3⇒x=-4 U x=2
-4*2=-8
Ответ -8
2 votes
Thanks 1
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Answers & Comments
Verified answer
(x+1)²=aa²-8a-9=0
a1+a2=8 U a1*a2=-9
a1=-1⇒(x+1)²=-1 нет решения
a2=9⇒(x+1)²=9
x+1=-3 U x+1=3⇒x=-4 U x=2
-4*2=-8
Ответ -8