Find All Real Solutions to the System of Equations Using $\begin{array} { l } x ^ { 2 } + y ^ { 2 } = 80 \\x ^ { 2 } - y ^ { 2 } = - 48\end{array}$

question 79

Multiple Choice

Find all real solutions to the system of equations using the addition method.
- $\begin{array} { l } x ^ { 2 } + y ^ { 2 } = 80 \\x ^ { 2 } - y ^ { 2 } = - 48\end{array}$

• A)(4, -8), (4, 8)
• B)(4, 8), (-4, 8), (4, -8), (-4, -8)
• C)(4, 8), (8, 4), (-4, -8), (-8, -4)
• D)(-4, -8), (-8, -4)

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