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1 August, 20:20

The first three steps of completing the square to solve the quadratic equation x^2+4x-6=0 are shown below.

Step 1: x^2+4x=6

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

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

What are the next 3 steps?

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  1. 2 August, 00:02
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    Take the sqrt of both sides of (x+2) ^2=10:

    x+2 = plus or minus sqrt (10)

    Solve for x: x = - 2 plus or minus sqrt (10)

    Evaluate x: x = - 2 + sqrt (10) AND x = - 2 - sqrt (10) (answers)
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