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Anonymous
Yes, it is.
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I think you mean (3x ± 1)^2 = (3x+1)(3x-1)?
x=1, y=5 is a legitimate answer.
YES ! When x = -1 then y = 3(-1) + 2 = -3 + 2 = -1
2x+3 = 3x+5 2x-3x = 5-3 -x = 2 x = -2
x + 2 = 3x-1 -2x = -3x = 1,5