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18 January, 04:21

The first three steps of completing the square to solve the quadratic equation x2 + 4x - 6 = 0, are

shown below.

Step 1: x2 + 4x =

Step 2: x2 + 4x +

Step 3: (x + 2) 2 = 10

What are the next 3 steps?

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Answers (1)
  1. 18 January, 08:21
    0
    step 1: x^2 + 4x = 6

    step 2: x^2 + 4x + 4 = 6 + 4

    step 3: (x + 2) ^2 = 10

    step 4: x + 2 = + / -sqrt (10)

    step 5: x = sqrt (10) - 2, or x = - sqrt (10) - 2
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