Question: The equation 4 x 2 + 9 y 2 - 3 6 = 0 represents an ellipse in standard position. Find the coordinates of the

The equation
4x2+9y2-36=0
represents an ellipse in standard position.
Find the coordinates of the foci and the equations of the directrices. Give your answers exactly.
The foci are (+-f,0) where f>0 and f=
The directrices are x=+-d where d>0 and d=
The equation 4 x 2 + 9 y 2 - 3 6 = 0 represents

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