if 3 + root 7 / 3 - root 7 equal to a + b root 7 then find the value of a and b
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On rationalising,
(3+√7/3-√7)*(3+√7/3+√7)
(3+√7)^2/(3)^2-√7)^2
9+7+6√7/9-7
16+6√7/2
8+3√7=a+b√7
a=8
b=3
(3+√7/3-√7)*(3+√7/3+√7)
(3+√7)^2/(3)^2-√7)^2
9+7+6√7/9-7
16+6√7/2
8+3√7=a+b√7
a=8
b=3
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