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Mikaliana
@Mikaliana
August 2022
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Помогите решить уравнение!
По алгебре очень лёгкое
(Х+4)-х²=2х+1
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Lesben
(x+4)-x²=2x+1
x-2x+4-1-x²=0
-x+3-x²=0
x²+x-3=0, D=1+12=13,√D=√13
x1=(-1+√13)/2
x2=(-1-√13)/2
Ecli zadanie: (x+4)²-x²=2x+1, to
x²+8x+16-x²=2x+1
8x+16=2x+1
6x=-15
x=-5/2
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Answers & Comments
x-2x+4-1-x²=0
-x+3-x²=0
x²+x-3=0, D=1+12=13,√D=√13
x1=(-1+√13)/2
x2=(-1-√13)/2
Ecli zadanie: (x+4)²-x²=2x+1, to
x²+8x+16-x²=2x+1
8x+16=2x+1
6x=-15
x=-5/2