Используйте определение квадратного корня , решите уравнение 1) √ 25-x^2 = 4
2)√x^2-81 = 12
3)√x^2-256 = 12
4) √625-x^2 = 15
2)√x^2-81 = 12
3)√x^2-256 = 12
4) √625-x^2 = 15
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Answers & Comments
2)x1=+15, x2=-15
3)x1=+20, x2=-20
4)x1=+20, x2=-20