1. If x>y>0, x^2+y^2=13 and xy=6, then y=?2. Solve by factorrization method 4x^2-4ax+(a^2-b^2)=0 (a,b,E R).3. If the price of a book is reduced by Rs. 5 a person can buy5 more books for Rs. 300. Find the original price of the book?4. A 2-digit number is four times the sum and the three times the product of its digit. Find the number?5. The sum of the squares of two consecutive odd number is 394. Find the numbers?

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