Find All Real Solutions to the System of Equations Using $\begin{array} { r } 2 x ^ { 2 } + y ^ { 2 } = 66 \\x ^ { 2 } + y ^ { 2 } = 41\end{array}$

question 12

Multiple Choice

Find all real solutions to the system of equations using the addition method.
- $\begin{array} { r } 2 x ^ { 2 } + y ^ { 2 } = 66 \\x ^ { 2 } + y ^ { 2 } = 41\end{array}$

• A)(5, 4), (-5, -4)
• B)(4, 5), (-4, 5), (4, -5), (-4, -5)
• C)(4, 5), (-4, -5)
• D)(5, 4), (5, -4), (-5, 4), (-5, -4)

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