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яна550743
@яна550743
August 2022
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Решите уровнение:
1) (x+3)(x-3)-x(x+4)=0
2)3x(1+12x)-(6x-1)(6x+1)=2,5x
3)(x-5)(x+5)-(2x+1)(x-2)=1-x^2
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Answers & Comments
IrinaFal
1)x^2-3x+3x-9-x^2-4x=0
-4x=9
-x=9/4
x=-9/4
2)3x+36x^2-36x^2-6x+6x+1=2,5x
3x-2,5x=1
0,5x=1
x=0,1
3)х^2+5х-5х-25-2х^2-4х-х+2=1-х^2
-3х=24
х=-8
1 votes
Thanks 2
IrinaFal
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Answers & Comments
-4x=9
-x=9/4
x=-9/4
2)3x+36x^2-36x^2-6x+6x+1=2,5x
3x-2,5x=1
0,5x=1
x=0,1
3)х^2+5х-5х-25-2х^2-4х-х+2=1-х^2
-3х=24
х=-8