In what step did Mitchell make an error? 5(x-2)^2+6=86

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.

Binh says the point of intersections is (0,-3) which statements identify the errors binh made , check all that apply

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?