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temo4ka133
@temo4ka133
August 2022
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Не решая уравнения найдите сумму и произведение его корней 3x^2-8x-14=0
7x^2+23x+5=0
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sedinalana
Verified answer
3x^2-8x-14=0
D=64+168=232>0
⇒по теореме Виета x1+x2=8/3 U x1*x2=-14/3
7x^2+23x+5=0
D=529-140=389>0
⇒по теореме Виета x1+x2=-23/7 U x1*x2=5/7
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Answers & Comments
Verified answer
3x^2-8x-14=0D=64+168=232>0⇒по теореме Виета x1+x2=8/3 U x1*x2=-14/3
7x^2+23x+5=0
D=529-140=389>0⇒по теореме Виета x1+x2=-23/7 U x1*x2=5/7