Question 46331
t~2-14t+d or t~2-14t+49 or (t-7)(t-7)

z~2-2z+k or z~2-2z+1 or (z-1)(z-1)

solution for all these type of problems is to square 1/2 of the middle term digit thus 14/2=7 & 2/2=1 and square them 7*7=49 1*1=1