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of course if is squared then it's a perfect square you ding dong just kidding that's what my Algebra teacher says
Yes because if x2-14x+49 then it is (x-7)(x-7) when factored
no, 12 squared is 144 and 13 squared is 169. so no it is not a perfect square
2x2+14x
Notice that the left side of the equation is a perfect square (x - 7)2 = x2 -14x + 49. so (x - 7)2 = 4. Take square root of both sides: x - 7 = ± 2, x = 9, or x = 5.
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