Solve the following equation by making an appropriate substitution. (x + 5)² +9(x+5) +18=0 Make an appropriate substitution and

Question

Solve the following equation by making an appropriate substitution.
(x + 5)² +9(x+5) +18=0
Make an appropriate substitution and rewrite the equation in quadratic form.
Let u= x +5, then the quadratic equation in u is u² +9u+18=0.
Solve the equation. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The solution set is
(Simplify your answer. Use a comma to separate answers as needed.)
B. The solution set is the empty set.

Kunduz · Accepted Answer

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