Решите уравнения: x^2-16=0 z^2-25=0 y^2+100=0 3z^2-27=0
X^2 - 16 = 0 x^2 = 16 x = ± √16 x = ± 4 z^2 - 25 = 0 z^2 = 25 z = ± √25 z = ± 5 y^2 + 100 = 0 y^2 = - 100 реш нет 3z^2 - 27 = 0 //: 3 z^2 - 9 = 0 z^2 = 9 z = ± √9 z = ± 3