Math

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(10 Squar root -13)(-5 square root -5)

put in standard form a+bi

I really don't understand square roots so can you show me how to do these please

  • Math -

    by definition √-1 = i

    so rewrite
    (10√-13)(-5√-5) as

    (10√-1√13)(-5√-i√5)
    = (10i√13)(-5i√5)
    = -50i^2√65
    = +50√5

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