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What is the solution of the equation when solved over the complex numbers? X2+24=0

2 Answers

1 vote

Final answer:

The solution to the equation x² + 24 = 0 over the complex numbers is x = ±2√(6)i. After isolating x² on one side, we take the square root of both sides and introduce the imaginary unit i because the number under the square root is negative.

Step-by-step explanation:

To solve the equation x² + 24 = 0 over the complex numbers, we need to find values of x that satisfy the equation. This is a quadratic equation with 'a' as 1 (the coefficient of x²), 'b' as 0 (since there is no x term), and 'c' as 24.

We will first isolate x² by subtracting 24 from both sides of the equation:

x² = -24

Next, to find x, we take the square root of both sides. Remember that when we take the square root of a negative number, we get an imaginary number. The square root of -24 can be expressed as:

x = ±√(-24)

This simplifies to:

x = ±√(24) × ±i

Since √(24) is √(4 × 6), which simplifies to 2√(6), the final solution in terms of complex numbers is:

x = ±2√(6)i

User Xinyu Li
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5.8k points
6 votes

You can rearrange the equation as follows:


x^2 = -24

Using real numbers, it would be impossible for a square to be negative, but using imaginary numbers it is possible, since
i^2 = -1

So, since
√(24)^2 = 24, we know that


(i√(24))^2 = i^2\cdot √(24)^2 = (-1)\cdot 24 = -24

So, the solutions to the equations are


x^2 = -24 \iff x = \pm√(-24) = \pm i √(24)

User Neildt
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5.8k points