решите 3 квадратных уравнения 30x^2+17x-132=0 10x^2+77x-171=0 187x^2+630x+527=0. Created by znatok1413. algebra-ru

решите 3 квадратных уравнения 30x^2+17x-132=0 10x^2+77x-171=0 187x^2+630x+527=0...

znatok1413 @znatok1413

August 2022 1 20 Report

решите 3 квадратных уравнения
30x^2+17x-132=0
10x^2+77x-171=0
187x^2+630x+527=0

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dustInEyes

Verified answer

30x^2+17x-132=0
Д=289+15840=16129
√Д=127
х1=(-17+127)/60=11/6=1ц 5/6
х2=(-17-127)/60=-2,4

_________________________
10x^2+77x-171=0
Д=5929+6840=12769
√Д=113
х1=(-77+113)/20=1.8
х2=(-77-113)/20=-9.5

_______________________
187x^2+630x+527=0
Д=396900-394196=2704
√Д=52
х1=(-630+52)/374=-578/374=289/187=1 цел 102/187
х2=(-630-52)/374=682/374=341/187=1цел 154/187

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Answers & Comments

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