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28 September, 04:57

Which method is most effective? x^2-1=15

a-complete the square

b-square root

c-factor

d-quadratic formula

+4
Answers (1)
  1. 28 September, 07:40
    0
    Step-by-step explanation:

    b. square root

    x²-1=15

    x²=16

    square root on both side

    x±4
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