rationalise 7+root5/7-root5
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1
Answer:
68 root5/ 53
Step-by-step explanation:
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Answered by
1
Step-by-step explanation: √7+√5/√7-√5
= √7+√5/√7-√5 × √7+√5/√7+√5
= (√7+√5)²/(√7)²-(√5)²
=(√7)²+(√5)²+2(√7)(√5)/7-5
=7+5+2√35/2
=12+2√35/2
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