(a-b) (a-b)
(√5-√3) ( √5 -√3).
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Step-by-step explanation:
(√5-√3) (√5 -√3)
(√5×√5 - √5×√3 - √3×√5 + √3×√3)
(5 - √15 - √15 + 3)
5 - 2√15 + 3
8 - 2√15
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