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" 21.Simplify "(4+sqrt(5))/(4-sqrt(5))+(...

" 21.Simplify "(4+sqrt(5))/(4-sqrt(5))+(4-sqrt(5))/(4+sqrt(5))" by rationalizing the denominator."

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((4 +sqrt5)/(4-sqrt5)) +((4-sqrt5)/(4+sqrt5)) =?

Evalutate : (4-sqrt(5))/(4+sqrt(5))+ (4+sqrt(5))/(4-sqrt(5))

If (4+3sqrt(5))/(sqrt(5))=a+b sqrt(5), bis

Rationalize the denominator: 5/sqrt(7)

Rationalize the denominator 1/\sqrt{5}

Rationalize the denominator: 5/\sqrt{7}

Simplify : ( 4sqrt3 - 3sqrt5)^(2)

Simplify : 9sqrt(5)-4sqrt(5)+8sqrt(125)

Simplify : (5+sqrt3)/(7- 4sqrt3) -(5-sqrt3)/( 7+4sqrt3)

Simplify: sqrt(7)-4sqrt(5)+sqrt(125)