The simplification of surds of the form √(a ± 2√b) involves finding two numbers whose sum is 'a' and whose product is 'b'. If these numbers are x and y, then √(a ± 2√b) = √(x+y ± 2√xy) = √((√x ± √y)^2) = |√x ± √y|.
Find : √(5 - 2√6)
Asked in GPSC Prelims CSP 1 2017 · Topic: Agriculture and Allied Sectors (Technology in Agriculture: Farm Mechanization, Digital Agriculture)
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