I.9x2−18+5=0
II.2y−9y+10=0
if x < y
if x y
if x = y
if x > y
9x2−18x+5=0
9x2−3x−15x+5=0
3x(3x−1)−5(3x−1)=0
(3x−1)(3x−5)=0
x=13,53
2y2−9y+10=0
y=2,52
x<y
I.x2+x−20=0 II.y2−y−30=0
I. 9x2 - 18 + 5 = 0
II. 2y2 - 9y + 10 = 0
I.x2+9x+14=0
II.y2+y−2=0
I.4x2=49 II.9y2−66y+121=0