simplify- 7-3√5/7+3√5
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Answer:
(7+35)/(7–35)
Let us rationalize the denominator, we get
(7+35)/(7–35)=[(7+35)(7+35)]/[(7–35)(7+35)]
=[(7+35)2]/[72–(35)2]
=[72+(35)2+2.7.35]/[49–9.5]
=[49+9.5+425]/[49–45]
=[49+45+425]/[4]
=[94+425]/4
=2[47+215]/4
=[47+215]/2
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