Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

Answer 1

First divide both sides by 4 for a simpler equation. That will not change the answer.

x^2 + 2x + 4 = 0

Note that b^2 -4ac is negative. Use the quadratic equation. The roots are complex, not real.

x = [-2 +/-sqrt(-12)]/2
= -1 +/- i sqrt3
where i is the square root of -1.