Which among the following words cannot be formed using

I). p² = 81

II). q² - 9q + 14 = 0

I. 7x² + 27x + 18 = 0

II. 19y² - 27y + 8 = 0

l. p² - 3p - 54 = 0

II. q² - 19q + 90 = 0

I. x² - 20x + 96 = 0

II. y² - 23y + 22 = 0

I. 2x² - 11x + 12 = 0

II. 12y² + 29y + 15 = 0

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

Equation 1: x² - 24x + 143 = 0

Equation 2: y² - 20y + 96 = 0

I.√(3x-17)+ x=15

II.  y+  135/y=24 

I. 2y² - 15y + 18 = 0

II. 2x² + 9x - 18 = 0

A and B are the roots of equation x² - 13x + k = 0. If A - B = 5, what is the value of k?

I. 6p² – 7p = 5p – 7p² + 25

II. 11q² – 63q + 90 = 0