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babkaluntik
@babkaluntik
August 2022
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Решите уравнение (2x+1)в квадрате=(x-2)в квадрате?
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Bobikmobik
(2х+1)^2=(x-2)^2
1. 2x^2+2*2x*1+1^2=x^2-2*3*2+2^2
2. 4x^2+4x+1=x^2-4+4
3. 4x^2+4x=x^2
4.5x^2+4x=0
5. x(5x+4)=0
6. x=0 или 5х+4=0
х=0,4
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Answers & Comments
1. 2x^2+2*2x*1+1^2=x^2-2*3*2+2^2
2. 4x^2+4x+1=x^2-4+4
3. 4x^2+4x=x^2
4.5x^2+4x=0
5. x(5x+4)=0
6. x=0 или 5х+4=0
х=0,4