find the square of:
(3-√5)²
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Answered by
1
Find the square of:
(3 - √5)²
From the formula:
(a - b)² = a² + b² - 2ab
= (3)² + (√5)² - 2 × 3 × √5
= 9 + 5 - 6√5
= 14 - 6 √5
Answered by
2
Step-by-step explanation:
3^2+√5^2-2×3×√5
9+5-6√5
14-6√5
2(7-3√5)
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