Question

find the rational number a and b so that (3+√7)÷(3-✓7)=a+b√7​

Answer 1

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ANSWER ::

(3+√7)÷(3-✓7)=a+b√7

3² - ( √7) ²=a+b√7

9 - 7 =a+b√7

2 = a+b√7

So

a = 2

b = 0