Question

(simplyfy:(4 +root5/4-root5)-4-root5/4+root5​

Answer 1

Answer:

42/11

Step-by-step explanation:

(4+√5)/(4-√5)+(4-√5)/(4+√5)

now dividing and multiplying the first Term by

(4+√5) and second term by (4-√5),we get,

(4+√5)×(4+√5)/(4-√5)×(4+√5)+(4-√5)×(4-√5)/(4+√5)×4-√5)

=(4+√5)²/(16-5)+(4-√5)²/(16-5)

(applying (a²-b²)=(a+b) (a-b))

=16+5+8√5+16+5-8√5/11

=42/11

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