1.

Find the square of:(3-√5)²​

Answer»

FIND the square of:

(3 - √5

From the FORMULA:

(a - b)² = a² + b² - 2ab

= (3)² + (√5)² - 2 × 3 × √5

= 9 + 5 - 6√5

= 14 - 6 √5



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