You can put this solution on YOUR website! Solve for x by completing the square
2x^2+20=4x
-----
Divide thru by 2 to get:
x^2 - 2x + 10 = 0
----
Complete the square:
x^2 -2x + 1 = -10+1
---
(x-1)^2 = -9
-----
x-1 = +- 3i
---
x = 1+3i or x = 1-3i
========================
Cheers,
Stan H.
========================
You can put this solution on YOUR website! Solve for x by completing the square
First get the x's together and the constant on the other side.
Then divide the whole equation by any coefficient in front of the x^2...in this case, 2.
At this point, if we call the coefficient of x, b....then we would add (b/2)^2 to both sides. ->
Factor the left and simplify the right. Perfect squares always factor to be the sqrt or the front and back with the sign that is in front of the x term between them...like this.
Take the square root of both sides...don't forget it is always + or -. =+ or -
If you are only allowed to use "real" solutions...you are done...there is no "real" solution. However, if you are using imaginary or complex numbers...keep going as follows:
x-1= + or -3i
x=1 + or -3i
This is two answers: or
Happy Calculating!!!!
(