Question

8th and 9th plz solve it is important of square and square root​

Answer 1

Do prime factorisation of these 2 terms
You will get 7220 = 2x2x5x19x19

Now make pairs of similar terms , 2x2, 19 x19

Now the remaining factor is 5 , therefore now if you will divide 7220 by 5 you will get a number whose factors are in pair , so on dividing 7220 by 5 ,you will get 144

Now 144 is square of 12 , so your answer for question 8th will be 5 , and 12


Similarly you can find for question number 9



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Answer 2

Answer:

find the product of 1+√2 and 1+3√2 is this product arational of irrational