Find the square of 3-2 under root five
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4
Answer:
55.832
Step-by-step explanation:
As (a + b)² = a² + b² + 2.ab
(3 -2.root5)² = 3² + 2².(root5)² + 2. 3. 2. root5
= 9 + 20 + 12.root5
= 29 + 12.root5
= 29 + 26.832
= 55.832
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