Find out the word opposite in meaning of the given

I. 2x² - 7x + 3 = 0

II. 8y² - 14y + 5 = 0

I. 7p + 8q = 80

II. 9p – 5q = 57

I. 35x² - 46x – 16 = 0

II. 35y² - 116y + 96 = 0

I). p² = 81

II). q² - 9q + 14 = 0

I. 9/(4 )p + 7/8p = 21/12

II. 7/5p = 9/10q + 1/4

I. 9x² + 45x + 26 = 0

II. 7y² – 59y − 36 = 0

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

Equation 1: 4x² - 12x + 9 = 0

Equation 2: 2y² + 8y + 6 = 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.?

l). p² - 26p + 153 = 0

ll). q² - 17q + 72 = 0

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

Equation 1: x² - 45x + 450 = 0