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(5-√5)(5+√5)

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(5-√5)(5+√5)

Posted by Sunita Kamal 5 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Saksham Pandey 5 years, 3 months ago

5^2-√5^2=10-5=5

Shakti Sarkar 5 years, 3 months ago

20

Yogita Ingle 5 years, 3 months ago

(a - b) (a + b) = a² - b²
(5 - √5)(5 + √5) = 5² - √5 ²
= 25 - 5
= 20

Betty Mathew 5 years, 3 months ago

5(5+*5) - *5(5+*5) = 25+5*5 - 5*5+ 5 = 30

Sonali Waghade 5 years, 3 months ago

A

ANSWER

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