A.\(\frac{{{A_1}x + {B_1}y + {C_1}}}{{\sqrt {{A_1}^2 - {B_1}^2} }} = \frac{{{A_2}x + {B_2}y + {C_2}}}{{\sqrt {{A_2}^2 - {B_2}^2} }}\)
B.B. \(\frac{{{A_1}x + {B_1}y + {C_1}}}{{\sqrt {{A_1}^2 - {B_1}^2} }} = \pm \frac{{{A_2}x + {B_2}y + {C_2}}}{{\sqrt {{A_2}^2 - {B_2}^2} }}\)
C.\(\frac{{{A_1}x + {B_1}y + {C_1}}}{{\sqrt {{A_1}^2 + {B_1}^2} }} = \pm \frac{{{A_2}x + {B_2}y + {C_2}}}{{\sqrt {{A_2}^2 + {B_2}^2} }}\)
D.\(\frac{{{A_1}x + {B_1}y + {C_1}}}{{\sqrt {{A_1}^2 + {B_1}^2} }} = \frac{{{A_2}x + {B_2}y + {C_2}}}{{\sqrt {{A_2}^2 + {B_2}^2} }}\)
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Hóa Học lớp 12
