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12 September, 05:36

Solve Radical Equations

sqrt (28) + sqrt (63) + sqrt (175)

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Answers (1)
  1. 12 September, 06:37
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    Hello:

    175=7*5²

    63=7*3²

    28 = 7*2²

    √175 = √ (7*5²) = 5 √7

    √63 = √ (7*3²) = 3 √7

    √28 = √ (7*2²) = 4 √7

    √28+√63+√175 = 4√7 + 3√7 + 5 √7 = (4+3+5) √7 = 12 √7
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