Solved

Solve the Equation by Completing the Square $x ^ { 2 } + 10 x = - 21$

Question 204

Multiple Choice

Solve the equation by completing the square.
- $x ^ { 2 } + 10 x = - 21$

A) $\{ - 3 , - 7 \}$
B) $\{ 3 , - 7 \}$
C) $\{ - 3,7 \}$
D) $\{ 3,7 \}$

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