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limonly
@limonly
July 2022
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Решите уравнения! Даю много баллов!!!!
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Kixcertborn2
Verified answer
X³+2x²+x+2=0
x*(x²+1)+2(x²+1)=0
(x+2)(x²+1)=0
x=-2
x∉R
==================
x²-5x+6=0
D=(-5)²-4*1*6=25-24=1
x=5
±1/2
x1=3
x2=2
==========================================================
(3x-1)
²-(x+3)²=0
(3x-1-(x+3))*(3x-1+x+3)=0
(3x-1-x-3)*(4x+2)=0
(2x-4)*2(2x+1)=0
2(x-2)*2(x+1)=0
(x-2)*(2x+1)=0
x-2=0 x1=2
2x+1=0 x2=- 1/2
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Answers & Comments
Verified answer
X³+2x²+x+2=0x*(x²+1)+2(x²+1)=0
(x+2)(x²+1)=0
x=-2
x∉R
==================
x²-5x+6=0
D=(-5)²-4*1*6=25-24=1
x=5±1/2
x1=3
x2=2
==========================================================
(3x-1)²-(x+3)²=0
(3x-1-(x+3))*(3x-1+x+3)=0
(3x-1-x-3)*(4x+2)=0
(2x-4)*2(2x+1)=0
2(x-2)*2(x+1)=0
(x-2)*(2x+1)=0
x-2=0 x1=2
2x+1=0 x2=- 1/2