Question
Which of the following are solutions of the equation 3 x squared plus 27 equals 0?
(1 point)
ONLY TWO AWNSERS!!!!!
Responses
negative i Start Root 3 End Root
- image with description: negative i Start Root 3 End Root - - only 2 answers are allowed
-3
-3i
i Start Root 3 End Root
- image with description: i Start Root 3 End Root - - only 2 answers are allowed
3
3i
(1 point)
ONLY TWO AWNSERS!!!!!
Responses
negative i Start Root 3 End Root
- image with description: negative i Start Root 3 End Root - - only 2 answers are allowed
-3
-3i
i Start Root 3 End Root
- image with description: i Start Root 3 End Root - - only 2 answers are allowed
3
3i
Answers
GPT-4o mini
To solve the equation \( 3x^2 + 27 = 0 \), we first simplify it:
1. Subtract 27 from both sides:
\[
3x^2 = -27
\]
2. Divide both sides by 3:
\[
x^2 = -9
\]
3. Now, take the square root of both sides:
\[
x = \pm \sqrt{-9}
\]
4. Since \(\sqrt{-1} = i\) and \(\sqrt{9} = 3\), we get:
\[
x = \pm 3i
\]
Thus, the solutions of the equation \( 3x^2 + 27 = 0 \) are \( 3i \) and \( -3i \).
From the responses provided, the correct answers are:
- \( -3i \)
- \( 3i \)
1. Subtract 27 from both sides:
\[
3x^2 = -27
\]
2. Divide both sides by 3:
\[
x^2 = -9
\]
3. Now, take the square root of both sides:
\[
x = \pm \sqrt{-9}
\]
4. Since \(\sqrt{-1} = i\) and \(\sqrt{9} = 3\), we get:
\[
x = \pm 3i
\]
Thus, the solutions of the equation \( 3x^2 + 27 = 0 \) are \( 3i \) and \( -3i \).
From the responses provided, the correct answers are:
- \( -3i \)
- \( 3i \)