if root5=2.36,evaluate 2root5(3-4/root5 +6)

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1 Answer

2√5(3-4/√5+6)=2√5(9-4/√5)=18√5-8=18*2.36-8=34.48

2√5(3-4/(√5+6))=6√5-8√5/(√5+6)=6√5-8√5(√5-6)/(5-6)=6√5+8√5(√5-6)=

6√5+40-48√5=-42√5+40=-99.12+40=-59.12

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