Use the Quadratic Formula to Solve the Equation $$\mathrm { y } ^ { 2 } - 18 \mathrm { y } + 81 = 0$$

question 116

Multiple Choice

Use the quadratic formula to solve the equation.
- $$\mathrm { y } ^ { 2 } - 18 \mathrm { y } + 81 = 0$$

• A) \(\{ - 9,9 \}\)
• B) \(\{ - 9 - i , - 9 + i \}\)
• C) \(\{ - 9 \}\)
• D) \(\{ 9 \}\)

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