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msgula1970
@msgula1970
August 2021
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Помогите решить одно уравнение)
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nafanya2014
Verified answer
Уравнение примет вид:
-2х²+х+1=12-9х.
-2х²+10х-11=0,
2x²-10x+11=0,
D=b²-4ac=(-10)²-4·2·11=100-88=12
x₁=(10-2√3)/4 или x₂=(10+2√3)/4
x₁=(5- √3)/2 или x₂=(5+√3)/2
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Answers & Comments
Verified answer
Уравнение примет вид:
-2х²+х+1=12-9х.
-2х²+10х-11=0,
2x²-10x+11=0,
D=b²-4ac=(-10)²-4·2·11=100-88=12
x₁=(10-2√3)/4 или x₂=(10+2√3)/4
x₁=(5- √3)/2 или x₂=(5+√3)/2