1) -у^2 + 6 = 0-y^2 = -6y^2 = 6y = ±√6
2) 3x^2 - 7 = 03x^2 = 7x^2 = 7/3x = ±√(7/3)
3) -4x^2 + 19 = 0-4x^2 = -19x^2 = 19/4x = ±√(19/4)
4) -0.3y^2 + 0.39 = 0-0.3y^2 = -0.39y^2 = 0.39 / 0.3y^2 = 1.3y = ±√1.3
1) -у^2 + 6 = 0
-y^2 = -6
y^2 = 6
y = ±√6
2) 3x^2 - 7 = 0
3x^2 = 7
x^2 = 7/3
x = ±√(7/3)
3) -4x^2 + 19 = 0
-4x^2 = -19
x^2 = 19/4
x = ±√(19/4)
4) -0.3y^2 + 0.39 = 0
-0.3y^2 = -0.39
y^2 = 0.39 / 0.3
y^2 = 1.3
y = ±√1.3