HELP PLEASEEE. I DONT UNDERSTAND

D

Step-by-step explanation:

So we have the equation:

And we want to solve for x.

We can solve it by completing the square.

First, subtract 58 from both sides:

Divide the b term by 2 and square it:

So, add 9 to both sides:

On the left, the perfect square trinomial pattern. Add on the right. So:

Take the square root of both sides:

The square root of -49 is 7i:

Add 3 to both sides:

So, our answer is D.

And we're done!