You can put this solution on YOUR website! .
solve for X by completeting the sqaure
x^2 + 8x -4 = 0
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x^2 + 8x - 4 = 0.
You have these two terms x^2 + 8x . . .
So, the thought which comes first to your mind is to get (x+4)^2.
To bring it to reality, you need to add 4^2 = 16 and to distract it to keep the balance.
Now, see how I do it below:
x^2 + 8x - 4 = 0
is equivalent to
(x^2 + 8x + 16) - 16 - 4 = 0
is equivalent to
- 20 = 0
is equivalent to
= 20
is equivalent to
x+4 = +/-
is equivalent to
x = .
The two roots are = and = .
