5x2−18x+9=0
20y2−13y+2=0
(a)
5x2 - 18x + 9 = 0
5x2 - 15x- 3x + 9 = 0
5x[x - 3] - 3[x - 3] = 0
[x - 3][5x - 3] = 0
x = +3, +3/5
20y2 - 13y + 2 = 0
20y2 - 8y - 5y + 2 = 0
4y[5y - 2] - 1[5y - 2] = 0
[5y - 2][4y - 1] = 0
y = +2/5, + 1/4
x = +3, +3/5 So, clearly, x>y