Find All Real Solutions to the System of Equations Using $\begin{aligned}x ^ { 2 } - 3 y ^ { 2 } & = 1 \\4 x ^ { 2 } + 3 y ^ { 2 } & = 19\end{aligned}$

question 111

Multiple Choice

Find all real solutions to the system of equations using the addition method.
- $\begin{aligned}x ^ { 2 } - 3 y ^ { 2 } & = 1 \\4 x ^ { 2 } + 3 y ^ { 2 } & = 19\end{aligned}$

• A)(2, 1), (-2, -1)
• B)(2, 1), (2, -1), (-2, 1), (-2, -1)
• C)(1, 2), (-1, 2), (1, -2), (-1, -2)
• D)(-1, 2), (1, -2)

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