simplify (5+√5)(5-√5)
lasya0918:
20
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Answered by
9
Answer:
(5+√5)(5 - √5). { using the identity of (a² - b²)=(a+b)(a - b) we get :-
(5)² - (√5)²
25 - 5 = 20
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Answered by
4
Answer:
Step-by-step explanation:
(5+√5)(5-√5)
By using property of
a^2 - b^2
= (5)^2 - (√5)^2
= 25 - 5
= 20
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