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Find the x-coordinate of the vertex y equals x exponent 2 plus 12x plus 21?
Wiki User
∙ 14y ago
y = x2 + 12x + 21
At the max or min point, the first derivative of the function = 0.
2x + 12 = 0
2x = -12
x = -6
Wiki User
∙ 14y ago
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