If 7+√5/7−√5 − 7−√5/7+√5 = a + 7√5 b, then find a and b
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{(7 + _/5)/(7-_/5)} - {(7-_/5)/(7+_/5)}
= {(7+_/5)^2}/24 - {(7-_/5)^2}/24
= (28_/5)/24
= 0 + 7_/5 (1/6)
a = 0 and b = 1/6
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