4x2-20x+25=0 সমীকরণটির সমাধান হলো-
A
25
B
52
C
-52
D
-25
Correct Answer: 52
4x2 - 20x + 25 = 0 = (2x)2 - 2.2x.5 + 52 = 5 = (2x - 5)2 = 0 = 2x - 5 = 0 = 2x = 5 = x = 5/2