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Mandy86

  • 3 years ago

(12-sqrt-4)+(7+sqrt-9)

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  1. Mandy86
    • 3 years ago
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    \[(12-\sqrt{-4})+(7+\sqrt{-9})\]

  2. geerky42
    • 3 years ago
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    Remember, \( \sqrt{-a} = i\sqrt a\)

  3. geerky42
    • 3 years ago
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    Do that then combine like terms.

  4. geerky42
    • 3 years ago
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    Don't forgot to simply.

  5. Mandy86
    • 3 years ago
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    \[2\sqrt{3}-2i+7+3i\]

  6. Mandy86
    • 3 years ago
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    oh its 12+7=19

  7. Mandy86
    • 3 years ago
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    19+i

  8. geerky42
    • 3 years ago
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    Yep.

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