Which of the following correctly indicates whether a triangle can have sides with lengths 7.2, 7.7, and 15, and also provides the correct explanation?

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.

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If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f-g)(x).