Question

expand and simplify (7+root 6)²

Answer 1

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• (7 + √6)²

By identity , (a + b)² = a² + b² + 2ab

= 7² + √6² + 2 × 7 × 6

(√6² = √36 = √6 × √6 = 6)

= 49 + 6 + 84

= 139

Hope it helps