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4 October, 08:21

This is Josh's solution for the equation: x^2-6x-7=0

x^2-6x-7=0

x^2-6x=7

x^2-6x+9=7+9

(x-3) ^2=16

x-3=16

x=19

x-3=-16

x=-13

Is Josh's solution correct? Explain.

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Answers (1)
  1. 4 October, 08:29
    0
    No, x = 7, and - 1. ax^2+bx+c=0 is the formula.
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