Select the most appropriate option to substitute the bold segment in the given sentence. If there is no need to substitute it, select 'No substitution'.

The authorities are looked on the matter.

I. p² - 19p + 88 = 0   

II. q² - 48q + 576 = 0

I. 20x² - 93x + 108 = 0

II.72y² - 47y - 144 = 0

I. 2x²– 25x + 33 = 0

II. 3y²+ 40y + 48 = 0

I. 27x⁶- 152x³+ 125 = 0

II. 216y⁶- 91y³+ 8 = 0

I.√(3x-17)+ x=15

II.  y+  135/y=24 

I. 8a² – 22a+ 15 = 0

II. 12b² - 47b + 40=0

In each of these questions, two equations (I) and (II) are given.You have to solve both the equations and give answer   

I. 27x⁶-152x³+125=0

II. 216y⁶ -91y³+8=0

I. x² - 20x + 96 = 0

II. y² - 23y + 22 = 0

I. y² - 7 y – 18 = 0

II. x² + 10 x + 16 = 0