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Mark44

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If you divide both sides by 2, you get 2 = (x + 2) + 1, so that's a valid step, but a little longer than if you had subtracted 2 from each side as the first step.when solving 4 = 2(x + 2) + 2, I noticed that only get a correct answer when subtracting the two before dividing the other two.why is this?

If you bring all terms to one side, you get (x - 3)Scheuerf said:I'm also confused about solving x - 3 = (x - 3)^2. You can get the right answer by setting it equal to 0. You then get two answers. If you just divide both sides by x - 3 and continue solving, you only get one answer. Why?

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