Question 189423: Solve for x: x^2 + 7x + 4 = 0. If the solutions are complex numbers, then give your solutions in the usual a + bi form. Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website!
Subtract from both sides
Complete the square by taking of the
coefficient of the term, square it, and
add it to both sides
The left side is a perfect square. Rewrite it.
Take the square root of both sides
and also
so
and
