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26 July, 17:15

Solve by using the perfect squares method.

4x2 = 100

{-5, 5}

{5}

{-25, 25}

{25}

+2
Answers (1)
  1. 26 July, 19:41
    0
    The answer is (4 x) ^2 = 100; ((2x)) ^2 = 100; 2x = plus or minus 10; x = + or - 5
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