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27 July, 19:33

Percy solved the equation x2 + 7x + 12 = 12. His work is shown below. Is Percy correct? Explain.

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  1. 27 July, 20:24
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    What does Percy's work look like?
  2. 27 July, 22:12
    0
    Percy is not correct because he applied the zero product property to a factored expression that was not equal to 0. He should have subtracted 12 from both sides to get x2 + 7x = 0 before factoring. The correct solutions are 0 and - 7
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