$$ x^{2}+8 x+16=0 $$ Write one exact, simplified solution in each box. You can add or remove boxes. If a solution is not a real number, write it in the form $$ \mathrm{a}+\mathrm{bi} $$ or $$ \mathrm{a}-\mathrm{bi} $$, where a and b are real numbers. $$ \frac{\square}{\square} $$

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Solve the equation $$ x^{2}+8x+16=0 $$.
Solve the quadratic equation by following steps:
- step0: Solve by factoring:
  $$x^{2}+8x+16=0$$
- step1: Factor the expression:
  $$\left(x+4\right)^{2}=0$$
- step2: Simplify the expression:
  $$x+4=0$$
- step3: Move the constant to the right side:
  $$x=0-4$$
- step4: Remove 0:
  $$x=-4$$
The exact, simplified solution to the equation $$x^{2}+8x+16=0$$ is $$x=-4$$.
$$ x = -4 $$

\( x^{2}+8 x+16=0 \) Write one exact, simplified solution in each box. You can add or remove boxes. If a solution is not a real number, write it in the form \( \mathrm{a}+\mathrm{bi} \) or \( \mathrm{a}-\mathrm{bi} \), where a and b are real numbers. \( \frac{\square}{\square} \)

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