Math, asked by kavyapandya62, 7 months ago

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(4-√5) (4-√5)

Answers

Answered by desaipreet2105

0

Answer:

21-8√5

Step-by-step explanation:

(4-√5)(4-√5) = (4-√5)²

(a-b)² = a² + b² - 2ab

(4-√5)² = 4² + √5² - 2(4)(√5)

==>16 + 5 - 8√5

==>21-8√5

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