Question

(root5​−root4​)^2(root5​+root4​)^2


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Answer 1

Answer:

(√5)²-(√4)²

→5-4

=1

Step-by-step explanation:

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Answer 2

Answer:

Given :-

➪ (√5 - √4)² (√5 + √4)²

Solution :-

➪ (√5 - √4)² (√5 + √4)²

➭ {(√5)² + (√4)² - 2 × √5 × √4} {(√5)² + (√4)² + 2 × √5 × √4}

➭ (5 + 4 - 2√20) (5 + 4 + 2√20)

➭ (9 - 2√20) (9 + 2√20)

➭ 9(9 + 2√20) - 2√20(9 + 2√20)

➭ 81 + 18√20 - 18√20 - 4 × 20

➭ 81 - 80

➭ 1

∴ The answer of this question is 1

Formula used :-

➪ (a + b)²

➭ a² + b² + 2ab

➪ (a - b)²

➭ a² + b² - 2ab