What value of p is a solution to this equation?


p
2
+18=21

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
1 hour ago

To solve the equation \(-p^2 + 18 = 21\), we will first isolate \(p^2\).

  1. Subtract 18 from both sides:

    \[ -p^2 + 18 - 18 = 21 - 18 \]

    This simplifies to:

    \[ -p^2 = 3 \]

  2. Now, multiply both sides by -1:

    \[ p^2 = -3 \]

Since \(p^2\) cannot be negative in the set of real numbers, this equation has no real solutions. If we consider complex numbers, we can take the square root:

\[ p = \pm \sqrt{-3} = \pm i\sqrt{3} \]

So the solutions in the complex number system are:

\[ p = i\sqrt{3} \quad \text{and} \quad p = -i\sqrt{3} \]