find the value of A and B in the following 3+root 7 /3-root 7=a+b root 7
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3+√7/3-√7=a+b√7
by rationslising the denominator
we have
(9+7+6√7)/9-7=a+b√7
(16+6√7)/2=a+b√7
8+3√7=a+b√7
a=8
b=3
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