rationalize the denominator root7-root5/root7+root5
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(√7-√5)/(√7+√5)
= (√7-√5)(√7-√5) / (√7+√5)(√7-√5)
= (7+5-2√35) / (7-5)
=(12-2√35) / 2
= 6-√35
= (√7-√5)(√7-√5) / (√7+√5)(√7-√5)
= (7+5-2√35) / (7-5)
=(12-2√35) / 2
= 6-√35
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√7-√5/√7+√5×√7-√5/√7-√5
(√7-√5)²/(√7)²-(√5)²
7+5-2√35/7-5
12-2√35/2
6-√35
√7-√5/√7+√5×√7-√5/√7-√5
(√7-√5)²/(√7)²-(√5)²
7+5-2√35/7-5
12-2√35/2
6-√35
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