Recently which country has discovered 31 million metric

Equation 1: x² - 144x + 5184 = 0

Equation 2: y² - 130y + 4225 = 0

if x satisfies 3x² – 5x – 12 = 0, find the sum of reciprocals of roots.

I. 7x² + 52x + 21 = 0

II. 6y² + 7y - 24 = 0

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

Equation 1: 21x² - 82x + 80 = 0

Equation 2: 23y² - 132y + 85 = 0

I. 5x + 2y = 31

II. 3x + 7y = 36

I. x² – 13x + 36 = 0

II. 3y² – 29y + 18 = 0

I. 40 x² - 93 x + 54 = 0

II. 30 y² - 61 y + 30 = 0

I. x² - 9x - 52 = 0

II. y² - 16y + 63 = 0

I. 117x² + 250x + 117 = 0

II. 54y² -123y + 65 = 0

Equation 1: x² + 16x + 63 = 0

Equation 2: y² + 10y + 21 = 0