2 into root 15 + root 5 the whole into root 15 + 3 into root 5
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2 into root 15 +root 5 the whole into root 15+3 into root 5 = 2√5
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2 √15 × (√15 + 3√5 ) + √5 × (√15 + 3 √5 )
= 2 × 15 + 2 × 3 × √75 + √75 + 3 × 5
= 45 + 7 × √75
= 45 + 35√3
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