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

Equation 1: x² - 32x + 252 = 0

Equation 2: y² - 30y + 221 = 0

I. 3x² – 17x + 10 = 0

II. y² – 17y + 52 = 0

I. y/16 = 4/y 

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

Between what values of x is the expression 19x - 2x² - 35 positive?

I. 12a² – 55a + 63 = 0

II. 8b² - 50 b + 77 = 0

I. 8x² + 2x – 3 = 0

II. 6y² + 11y + 4 = 0

Equation 1: x² - 180x + 8100 = 0

Equation 2: y² - 170y + 7225 = 0

I. 40x² + 81x + 35 = 0

II. 63y² + 103y + 42 = 0

I. 35x² - 24x – 35 = 0

II. 72y² - 145y + 72 = 0

I. 2x² + 5x + 2 = 0

II. 4y² = 1