Question

Answer this question ​

Answer 1

Step-by-step explanation:

multiplying it by its conjugate

5√2+3√5. 5√2+3√5

--------------- * ----------------

5√2-3√5. 5√2+3√5

= (5√2+3√5)²

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(5√2)²-(3√5)²

= 25*2+9*5+15*√10

------------------------------

25*2-9*5

= 50+45+15√10

------------------------

50-45

= 95 + 15√10

---------------------

5

= 19+3√10

therefore a = 19 and b = 3

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