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katya00999999
@katya00999999
July 2022
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Решить уравнение: 2х2 + 3х – 2 = 0.
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fedinajulia
2х^2 + 3x - 2 = 0
D = 9 - 4(2* (-2) = 9 + 16 = 25 YD = 5
x1 = (-3 +5) / 4 = 2/4 = 1/2 = 0,5
x2 = ( - 3 - 5) / 4 = -8 / 4 = - 2
Ответ:
х1 = 0,5
х2 = - 2
0 votes
Thanks 1
кляча
Verified answer
D=b²-4ac=9+16=25
√D=5
x₁=(-3+5)÷4=0,5
x₂=(-3-5)÷4=-2
0 votes
Thanks 1
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Answers & Comments
D = 9 - 4(2* (-2) = 9 + 16 = 25 YD = 5
x1 = (-3 +5) / 4 = 2/4 = 1/2 = 0,5
x2 = ( - 3 - 5) / 4 = -8 / 4 = - 2
Ответ: х1 = 0,5
х2 = - 2
Verified answer
D=b²-4ac=9+16=25√D=5
x₁=(-3+5)÷4=0,5
x₂=(-3-5)÷4=-2