1.

√7-√5/√7+√5 , Simplify the given number by rationalising the denominator.

Answer» \bold{Answer :}

We RATIONALIZE the denominator of the given number by multiplying both its NUMERATOR and its denominator by the conjugate irrational number (√7 - √5)

Now,

(√7 - √5)/(√7 + √5)

= {(√7 - √5) (√7 - √5)}/{(√7 + √5) (√7 - √5)}

= (7 - 2√35 + 5)/(7 - 5)

= (12 - 2√35)/2

= 6 - √35,

which is the REQUIRED form

#\bold{MarkAsBrainliest}


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