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22 July, 15:03

Which statement is NOT true? x2 = 100 if and only if x = 10 or x = - 10. If x = - 10, then x2 = 100. If x2 = 100, then x = 10. If x = 10, then x2 = 100.

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  1. 22 July, 15:07
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    If x² = 100, then x = 10. NOT true, because if x² = 100, then x = ± 10
  2. 22 July, 15:15
    0
    If x^2 = 100, then x = 10 ... not completely true ... x can also = - 10
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