Question

solutions of x2 + 2x + 4?
(using the quadratic formula!)

Answer 1

(x+2)^2=x^2+4x+4
@dpasingh

Answer 2

I have to show work using the quadratic formula. I started it but I got lost somewhere.

Answer 3

Where'd you get lost in the formula

Answer 4

Ok wait....

Answer 5

USE THIS FORMULA TO SOLVE u will get ur solution

Answer 6

I did but I messed up somewhere in it...

Answer 7

Let us compare \[x^2 + 2x + 4=0 \] by \[ax^2 + bx +c=0\] we find:
a=1, b=2, c=4
Now let us use the quadratic formula to find its solution.
\[x= \frac{-b \pm \sqrt{b^2-4ac}}{2a}= \frac{-2 \pm \sqrt{2^2-4 \times 1\times 4}}{2 \times 1}\]
\[= \frac{-2 \pm \sqrt{4-16}}{2}= \frac{-2 \pm \sqrt{-12}}{2}= \frac{-2 \pm 2\sqrt{-3}}{2}\]
\[= \frac{2(-1 \pm \sqrt{-3)}}{2}=-1 \pm \sqrt{-3} \] is the required solution of the given quadratic equation.

@brooklynransome

Answer 8

@brooklynransome now he is absolutely right

Answer 9

@brooklynransome Your problem has been solved.