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11 August, 17:45

Solve

x2 - 49 = 0

A) ±49

B) ±12

C) ±7

D) ±6

+1
Answers (2)
  1. 11 August, 18:09
    0
    X2 - 49 = 0 factor this:0

    (x + 7) (x - 7) = 0

    x = + / - 7
  2. 11 August, 18:13
    0
    C, x = + - 7. Difference of squares
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