реши уравнение х^2+4х -------------

August 2022 1 9 Report

реши уравнение х^2+4х
------------- - 1=0
5

Answers & Comments

IRikki X^2+4x
--------- - 1 =0
5
x^2+4x - 5 = 0
D=b^2-4ac
D= 4^2-4(-5)
D= 16 + 20
D= 36

x1= -b- корень D
--------------
2a
x1 = -4-6/2
x1 = -10/2
x1 = -5

x2= -b + корень D/2a
x2 = -4+6/2
x2= 2/2
x2 = 1

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