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Douglas Spears
Mathematics
18 January, 14:28
Which is the vertex of x ^2 10x = - 17?
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Tyrese
18 January, 14:53
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The vertex is a t (-5, - 8)
Writing this as a function: y = x2 + 10x + 17
Now: y - 17 = x2 + 10x
Completing the square:
y - 17 + 25 = x2 + 10x + 25
y + 8 = (x + 5) 2
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