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15 September, 19:15

What is 5√28 + √63

in simplest radical form?

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Answers (1)
  1. 15 September, 19:42
    0
    5√28 + √63 = 5√ (4*7) + √ (9*7) = 5√4√7 + √9√7 = 5*2√7+3√7=10√7+3√7=

    = (√7) (10+3) = 13√7

    Answer is 13√7.
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