SOLUTION: X^2+4x+8=0 Can you find the solutions and then express them in the form a+bi?

Question 1056414: X^2+4x+8=0
Can you find the solutions and then express them in the form a+bi?
Found 3 solutions by Fombitz, ikleyn, josmiceli:
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Complete the square,

Answer by ikleyn(52864)   (Show Source): You can put this solution on YOUR website!
.
X^2+4x+8=0
Can you find the solutions and then express them in the form a+bi?
~~~~~~~~~~~~~~~~~~~~~~~~~~

Simply apply the quadratic formula: = = = = -2 +/- 2i. = -2 + 2i, = -2 - 2i.

Solved.

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!

I can complete the square to solve

Take the square root of both sides

and, also, taking the negative square root of ,

-----------------------
The roots are and
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To check, you can plug either solution for
back into original equation, like this:

You can do the checks

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