Which key feature was introduced by Airtel Payments Bank

I. 35x² - 46x – 16 = 0

II. 35y² - 116y + 96 = 0

I. 20y² - 13y + 2 = 0

II. 6x² - 25x + 14 = 0

I. y/16 = 4/y 

II. x³ = (2 ÷ 50) × (2500 ÷ 50) × 4² × (192 ÷ 12)

I. 20x² - 93x + 108 = 0

II.72y² - 47y - 144 = 0

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

Equation 1: x² - 40x + 300 = 0

Equation 2: y² - 30y + 216 = 0

I. 3p² - 17p + 22 = 0

II. 5q² - 21q + 22 = 0

I. 17x² - 26x – 16 = 0

II. 17y²- 26y + 9 = 0

I. 6x² + 77x + 121 = 0

II. y² + 9y - 22 = 0

I. 117x² + 250x + 117 = 0

II. 54y² -123y + 65 = 0

I. x² - x - 56 = 0

II. y² - 20y + 96 = 0