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MihaTheBear
@MihaTheBear
August 2022
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Решите уравнение
[tex] \sqrt{ {2x}^{2} + 7 } - 2 = x[/tex]
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Bronzor1
(sqrt(2x^2+7))^2=(x+2)^2
2x^2+7=x^2+4x+4
x^2-4x+3=0
x1=4+2/2=3
x2=4-2/2=1
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Answers & Comments
2x^2+7=x^2+4x+4
x^2-4x+3=0
x1=4+2/2=3
x2=4-2/2=1