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typoth
@typoth
July 2022
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7y²+19y-6=0 разложите
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TequilaSunrise
7y²+19y-6=0
D=361+168=23²
y12=
y1=4/14=2/7
y2=-3
a(y-y1)(y-y2)=7(y-2/7)(y+3)=(7y-2)(y+3)
проверяем (достаточно просто раскрыть скобки):
(7y-2)(y+3)=
- верно (:
ответ:
(7y-2)(y+3)=0
1 votes
Thanks 3
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Answers & Comments
D=361+168=23²
y12=
y1=4/14=2/7
y2=-3
a(y-y1)(y-y2)=7(y-2/7)(y+3)=(7y-2)(y+3)
проверяем (достаточно просто раскрыть скобки):
(7y-2)(y+3)= - верно (:
ответ: (7y-2)(y+3)=0