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Question: Find the vertex of the parabola (y + 2)² = 4(x - 1)? a) (2, -1) b) (-2, 1) c) (1, -2) d) (-1, 2) e) (-1, -2) f) None of these 

          Question: Find the vertex of the parabola (y + 2)² = 4(x - 1)? 
a) (2, -1) 
b) (-2, 1) 
c) (1, -2) 
d) (-1, 2) 
e) (-1, -2) 
f) None of these

Added by Bob W.

Precalculus with Limits
Precalculus with Limits
Ron Larson 2nd Edition
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Question: Find the vertex of the parabola (y + 2)² = 4(x - 1)? a) (2, -1) b) (-2, 1) c) (1, -2) d) (-1, 2) e) (-1, -2) f) None of these
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Transcript

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00:02 Okay, i think the easiest way to look at this is when x is 2, y is 0.
00:08 So suppose y is 0 for d.
00:12 I'm sorry for for a.
00:17 So we'll have x equals 2, 0 minus 4 squared minus 1.
00:24 And optimally we want this to equal something close to 2.
00:29 So we get 2 times 16 minus 1.
00:35 Well, that's too much...
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