segmentul AD contine punctele B si C astfel incat A B = 4cm AC = 12 cm AD = 20 aratati ca punctul C este mijlocul segmentului BD

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

the answer is b.)

< 1=< 2

25% is the answer