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Nikolay [14]
3 years ago
11

Which of the following is not a perfect square A)49 B)121 C)144 D)88

Mathematics
1 answer:
sergey [27]3 years ago
4 0
49 is 7(7)

122 is 11(11)

144 is 12(12)

So D. 88 is the imposter here.
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Answer:

Step-by-step explanation:

I used logic and took the easy way around this as opposed to the long, drawn-out algebraic way.  I noticed right off that at x = -3 and x = -1 the y values were the same.  In the middle of those two x-values is -2, which is the vertex of the parabola with coordinates (-2, 4).  That's the h and k in the formula I'm going to use.  Then I picked a point from the table to use as my x and y in the formula I'm going to use.  I chose (0, 3) because it's easy.  The formula for a quadratic is

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