решите 3 квадратных уравнения 6x^2+7x-3=0 20x^2+26x-6=0 3x^2-19x-14=0. Created by znatok1413. matematika-ru

решите 3 квадратных уравнения 6x^2+7x-3=0 20x^2+26x-6=0 3x^2-19x-14=0...

znatok1413 @znatok1413

August 2022 1 23 Report

решите 3 квадратных уравнения
6x^2+7x-3=0
20x^2+26x-6=0
3x^2-19x-14=0

Answers & Comments

dustInEyes

Verified answer

6x^2+7x-3=0
Д=49+72=121
√Д=11

х1=(-7+11)/12=1/3
х2=(-7-11)/12=-1.5

___________________

20x^2+26x-6=0
Д=676+480=1156
√Д=34
х1=(-26+34)/40=8/40=0,2
х2=(-26-34)/40=-1.5

____________________

3x^2-19x-14=0
Д=361+168=529
√Д=23

х1=(19+23)/6=7
х2=(19-23)/6=2/3

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dan treugolnik abc u kotorogo a 25 b22 c100 1 pust ak bissektri51259300c2d4339a5ba45fe3926ce2cd 26992

Answer

Answers & Comments

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