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pelme
@pelme
August 2022
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WhiteNeko
1)
(x²+2x+2x+4-x
²+2x-40)/(x-2)(x+2)=0
6x-36=0
6x=36
x=6
2)
(x
²+x+5x+5+1-x-2)/(x+1)(x+2)=0
x
²+5x+4=0
D=5
²-4*4=25-16=9=3
²
x1=-5+3/2=-1
x2=-5-3/2=-4
3)
(x
²-3x+2x+6-x
²+2)/(x+3)(x-3)=0
-x+8=0
x=8
4)
(x
²+2x-7x+14-8)/(x-2)(x+2)=0
x
²-5x+6=0
D=-5
²-4*6=25-24=1
x1=5+1/2=3
x2=5-1/2=2
5)
(одинаковый с 4)
6)
(16+x
²-4x-2x-8)/(x+4)(x-4)=0
x
²-6x+8=0
D=-6
²-4*8=36-32=4=2
²
x1=6+2/2=4
x2=5-2/2=2
7)
одинаковый с 6
8)
(x
²-x-5x+5+4-x-3)/(x-1)(x+3)=0
x
²-6x+6=0
D=-6
²-4*6=36-24=12
x1=6+
√12/2
x2=6-
√12/2
9)
такой же как 2
0 votes
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Answers & Comments
6x-36=0
6x=36
x=6
2)(x²+x+5x+5+1-x-2)/(x+1)(x+2)=0
x²+5x+4=0
D=5²-4*4=25-16=9=3²
x1=-5+3/2=-1
x2=-5-3/2=-4
3)(x²-3x+2x+6-x²+2)/(x+3)(x-3)=0
-x+8=0
x=8
4) (x²+2x-7x+14-8)/(x-2)(x+2)=0
x²-5x+6=0
D=-5²-4*6=25-24=1
x1=5+1/2=3
x2=5-1/2=2
5)(одинаковый с 4)
6)(16+x²-4x-2x-8)/(x+4)(x-4)=0
x²-6x+8=0
D=-6²-4*8=36-32=4=2²
x1=6+2/2=4
x2=5-2/2=2
7)одинаковый с 6
8) (x²-x-5x+5+4-x-3)/(x-1)(x+3)=0
x²-6x+6=0
D=-6²-4*6=36-24=12
x1=6+√12/2
x2=6-√12/2
9)такой же как 2