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Help and explain pls and ty

Help and explain pls and ty-example-1
User Sposmen
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\displaystyle\bf (3-5√(5) )-(5√(3) -3)=3+3-5√(5) -5√(3) =\boxed{6-5√(5) -5√(3) } \\\\\\\\√(5) (√(5) -2x)=\boxed{-2x√(5) +5}

User Makelc
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