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I think you mean (3x ± 1)^2 = (3x+1)(3x-1)?
what does 15+2x=5+3x equal to in math
3x-6x
-3x + 10x = 7x3x + 3x = 6x
X= -2 ! Since the equation must equal zero - 17+3x must equal 11. The variable 3x HAS to equal -6... therefore x is equal to minus 2.