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dgoni542
@dgoni542
October 2021
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Пожалуйста помогите с примером Г)
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uekmyfhfp
X^2 + x + 2√ (x^2 + x) = 0;
√(x^ + x) ^2 + 2 √(x^2 + x) = 0;
√ (x^2+ x) = t ≥ 0;
t^2 + t = 0;
t(t + 1) = 0;
t1 = 0; x^2 + x = 0;
x(x+1) = 0;
x1 = 0;
x2 = -1.
t2 = - 1; < 0 нет решений.
Ответ х = 0 или х = -1
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dgoni542
Откуда t взялось?
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Answers & Comments
√(x^ + x) ^2 + 2 √(x^2 + x) = 0;
√ (x^2+ x) = t ≥ 0;
t^2 + t = 0;
t(t + 1) = 0;
t1 = 0; x^2 + x = 0;
x(x+1) = 0;
x1 = 0;
x2 = -1.
t2 = - 1; < 0 нет решений.
Ответ х = 0 или х = -1