Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Express the radical using the imaginary unit, 
i.
Express your answer in simplified form.

+-sqrt(-77)=+-◻

Express the radical using the imaginary unit, i i .\newlineExpress your answer in simplified form.\newline±77=± \pm \sqrt{-77}= \pm \square

Full solution

Q. Express the radical using the imaginary unit, i i .\newlineExpress your answer in simplified form.\newline±77=± \pm \sqrt{-77}= \pm \square
  1. Recognizing the Imaginary Unit: First, we recognize that the square root of a negative number involves the imaginary unit ii, where i2=1i^2 = -1. We can rewrite the expression ±77\pm\sqrt{-77} by factoring out 1-1 from under the radical to separate the imaginary unit from the real number.\newline±77=±1×77\pm\sqrt{-77} = \pm\sqrt{-1 \times 77}
  2. Factoring Out 1-1: Next, we can express the square root of 1-1 as ii, and then take the square root of the remaining positive number, which is 7777.\newline±1×77=±i×77\pm\sqrt{-1 \times 77} = \pm i \times \sqrt{77}
  3. Expressing the Square Root of 1-1: Since 7777 is not a perfect square, we cannot simplify the square root of 7777 any further. Therefore, the expression remains as is.\newline±i77=±i77\pm i \cdot \sqrt{77} = \pm i \cdot \sqrt{77}

More problems from Introduction to complex numbers