Answers

2014-06-22T22:23:01+08:00
(x-4)²=0 
(x-4)(x-4)=x²-4x-4x+16=x²-8x+16
x²-8x+16=0
a+1  b=-8 c+16
0
letter c is wrong sorry here's the correct answer C=16
Thanks!