The vertex of: y=-2x^2-4x+1

I got to the point where you inverse factor it then I got lost... Help

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.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Which expression gives the exact value of x?