CBSE Class 9 Answered
(5+√5)(5-√5)
Asked by praveenapathak44 | 23 Sep, 2019, 08:43: AM
Expert Answer
(5 + √5)(5 - √5)
= 52 - (√5)2 (a - b)(a + b) = a2 - b2
= 25 - 5
= 20
Answered by Sneha shidid | 23 Sep, 2019, 08:54: AM
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