Solve the quadratic equations and determine the relation between x and y:

Equation 1: x² - 38x + 352 = 0

Equation 2: y² - 38y + 312 = 0

Quantity I: The cash price of a notebook is Rs. 100 but is can also be purchased on 11 monthly equal instalments of Rs. 10 each. Find rate of S.I.?

I. 3x⁶- 19x³+16=0

II. 9y⁴- 27y²+20=0

I. 14p² – 135p + 81 = 0

II. 7q² – 65q + 18 = 0

I. x² – 39x + 360 = 0

II. y² – 36y + 315 = 0

I. x² - 208 = 233

II. y² + 47 - 371 = 0

Solve the quadratic equations and determine the relation between x and y:

Equation 1: x² - 50x + 600 = 0

Equation 2: y² - 51y + 630 = 0

I. 5x² -14x + 8 = 0   

II. 2y² + 17y  + 36 = 0    

Solve the quadratic equations and determine the relation between x and y:

Equation 1: 13x² - 60x + 47 = 0

Equation 2: 17y² - 80y + 63 = 0