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29 August, 21:43

What is the sum of StartRoot negative 2 EndRoot and StartRoot negative 18 EndRoot?

4 StartRoot 2 EndRoot

4 StartRoot 2 EndRoot i

5 StartRoot 2 EndRoot

5 StartRoot 2 EndRoot i

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Answers (1)
  1. 29 August, 22:01
    0
    B. 4 StartRoot 2 EndRoot i

    Step-by-step explanation:

    Given the surd function √-2 and √-18, we are to fund the sum of both values.

    Taking the sum:

    = √-2 + √-18

    = (√2 * √-1) + (√18 * √-1)

    from complex numbers, √-1) = i

    The expression becomes

    = √2 i + √18 i

    = √2 i + √9*2 i

    = √2 i + 3√2 i

    = 4 √2 i

    = √-2 + √-18 = 4 √2 i

    The result is 4 StartRoot 2 EndRoot i
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