(3root 5 +2root 5)²
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i have no idea
Step-by-step explanation:
┐( ˘_˘)┌┐( ˘_˘)┌┐( ˘_˘)┌┐( ˘_˘)┌┐( ˘_˘)┌┐( ˘_˘)┌
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= (3√5+2√5)²
= (3√5)² + 2×(3√5)×(2√5) + (2√5)²
= 45 + 12√5 + 20
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