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EvelynW

Can someone show me the step to solve this please. I've looked at the examples that my teach provided and in my book but there are none for this type of problem. Thanks Express in terms of i. Root -225 + root -49

  • one year ago
  • one year ago

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  1. Eherre1989
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    any time you have a sum of a negative number in a square root you write i so for the firstone it is 15i + 7i= 22i

    • one year ago
  2. shashi20008
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    We have \[\sqrt{-1} = i\]now \[\sqrt{-225} = \sqrt{225}\times \sqrt{-1} = 15i\]similarly, \[\sqrt{-49} = 7i\]. Add them and you have your answer.. :)

    • one year ago
  3. EvelynW
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    K thank you. Know I can take it from there :)

    • one year ago
  4. EvelynW
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    Both of you thanks :)

    • one year ago
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