for the conjugate of the complex number c = 2 - i.

April 6, 2026Languages

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April 6, 2026

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Question 27: The question asks for the conjugate of the complex number $c = 2 - i$ . The conjugate of a complex number $a - bi$ is $a + bi$ . Therefore, the conjugate of $2 - i$ is $2 + i$ .

The correct option is 3. $\boxed{3}$

Question 28: The question asks for the solution set of the equation $c^2 + 7c - 12 = 0$ . We use the quadratic formula $c = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$ . Here, $a=1$ , $b=7$ , $c

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Question 27: The question asks for the conjugate of the complex number c = 2 - i.

Asked on April 6, 2026Languages

This languages problem is solved step by step below, with detailed explanations to help you understand the method and arrive at the correct answer.

ScanSolve AI AnswerAnswered on April 6, 2026

Here are the solutions to the problems: Question 27: The question asks for the conjugate of the complex number c = 2 - i. The conjugate of a complex number a - bi is a + bi. Therefore, the conjugate of 2 - i is 2 + i. The correct option is 3. 3 Question 28: The question asks for the solution set of the equation c^2 + 7c - 12 = 0. We use the quadratic formula c = -b ± sqrt(b^2 - 4ac)2a. Here, a=1, b=7, $c