Simplify (5 + √7)(5 − √7)

🎥 Video Solution:


📘 Simplify:

\[ (5 + \sqrt{7})(5 – \sqrt{7}) \]

✏️ Solution:

\[ = 5^2 – (\sqrt{7})^2 \]

\[ = 25 – 7 \]

\[ = 18 \]

✅ Final Answer: \(18\)

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