Start with x2 + 4x = 12 and complete the square, what is the equivalent equation?
(x + 2)2 = 16
(x + 2)2 = 14
(x + 4)2 = 16
(x + 4)2 = 28
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EVO

answer; seasons change because earth tilts on its axis; and the angle of the tilt causes the northern and southern hemisphere to trade places throughout the year;

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