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24 February, 01:03

Solve by factoring. x² - 121 = 0

0

-11

11

11, - 11

Solve by factoring. m² + 8m + 7 = 0

8,7

-7, 1

-7, - 1

7, 1

+2
Answers (1)
  1. 24 February, 04:33
    0
    The first one is 11 and - 11 because when you square them they both get 121

    The second one is - 7 and - 1
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