1.	For the equation , find the coordinates of the foci of the ellipse.
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		Hint
	2.	Write the equation x2 + 2y2 + 2x + 4y - 1 = 0 in standard form.
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		Hint
	3.	Write the equation of the ellipse whose foci are at (-3, 0) and (3, 0) and a = 5.
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	4.	Write the equation of the ellipse in standard form.
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	5.	Write an equation of an ellipse centered at the origin, with a = 4, b = 3 and the major axis on the y-axis.
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		Hint