0 \\
y_{2} =4 \\
y _{3}=2 \\
x^{2} =8 \\
x_{1} =- \sqrt{8} \\
x_{2} = \sqrt{8} \\
x^{2} =4 \\
x_{3} =-2 \\
x_{4} =2 \\
x^{2} =2 \\
x_{5} =- \sqrt{2} \\
x_{6} = \sqrt{2} " alt=" x^{2} =y \\
y^{3} -14y ^{2} +56y-64=0 \\
y^{3} -8 y^{2} -6y ^{2}+48y+8y-64=0 \\
y^{2} (y-8)-6y(y-8)+8(y-8)=0 \\
y-8=0 \\
y_{1} =8 \\
y^{2} -6y+8=0 \\
D>0 \\
y_{2} =4 \\
y _{3}=2 \\
x^{2} =8 \\
x_{1} =- \sqrt{8} \\
x_{2} = \sqrt{8} \\
x^{2} =4 \\
x_{3} =-2 \\
x_{4} =2 \\
x^{2} =2 \\
x_{5} =- \sqrt{2} \\
x_{6} = \sqrt{2} " align="absmiddle" class="latex-formula">