No.
The given quadratic expression can not be factored as a perfect square.
121
x2 - 14x + 49 = (x - 7)2
168
(x + 3)(x + 3)
49
49
26
38
144
(b/2)^2= 64
x2 + 22x + 121 to get this divide 22 by 2... then square the answer you get from that 22/2 = 11 112 = 121