Question

a+b√2=5/7-√2. find a and b​

Answer 1

Answer:

Step-by-step explanation:

after rationalising denominator of the given question we get

A = 35/31

B = 15/31

5/7+3√2

rationalsing its denominator

5 x 7-3√2 ___

7+3√2 7-3√2

5 (7-3√2) = 5(7-3√2) __

(7)^2 - (3√2)^2 49 - 18

5(7-3√2) = 35 - 15√2 = 35 - 15√2

Here, a-b√2 = 35 - 15√2

A = 35 B = 15.

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