I. p²+ 2p – 8 = 0 II. q² – 5q + 6 = 0

Quantity I: The price of rice is decreased by 30%, by how much % the consumption is increase so that the expenditure will decreased by 10%?

I. 64x² - 64x + 15  = 0     

II. 21y² - 13y + 2  =0

I. (y – 5)² – 9 = 0

II. x² – 3x + 2 = 0

I. 3x² - 14x + 15 = 0

II. 15y²- 34 y + 15 = 0

I. 8/(21x) - 2/7 = 0

II. 16y² - 24y +9 = 0

I. x² - 19x + 84 = 0

II. y² - 25y + 156 = 0

I. 8y²- 2y - 21 = 0

II. 2x²+ x - 6 = 0

I. 5x² - 24 x + 28 = 0    

II. 4y² - 8 y  - 12= 0    

The quadratic equation (p + 1)x ² -  8(p + 1)x + 8(p + 16) = 0 (where p ≠ -1) has equal roots. find the value of p.