Please help me

If ac = 12 and ab=7 is it possible that bc =10

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.