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8 October, 16:10

A student performed the following steps to find the solution to the equation

x2 - 2x - 8 - 0. Where did the student go wrong?

Step 1. Factor the polynomial into (x-4) and (x - 2)

Step 2. x-4 = 0 and x - 2 = 0

Step 3. x = 4 and x = 2

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Answers (1)
  1. 8 October, 16:31
    0
    Only the 2 is negative. The 2nd step is incorrect.

    Step-by-step explanation:

    In this equation, she did the 2nd step wrong because when you use the factors of 8, - 4 and - 2 just get you - 6, not - 2. So, you would have a - 4 and a positive 2.
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