Question

Решите уравнение 

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Answer 1

 

$sqrt{x^2 - 3x} = |5 - x|\\ x(x - 3) geq 0, x_1 = 0, x_2 = 3, x in (-infty;0] cup [3; +infty)\\ underline{x^2} - 3x = 25 - 10x + underline{x^2}\\ 7x = 25\\ boxed{ x = frac{25}{7} }$