I. 4x2 = 49 II. 9y2 - 66y + 121 = 0
if x < y
if x y
if x = y
4x2=49
x2=494
x=±72=±3.5
9y2−66y+121=0
(3y−11)2=0
y=113=3.66
x < y
I.4x2=49 II.9y2−66y+121=0