Answer:
The correct option is C
Step-by-step explanation:
x2 - 12x + 36
The coefficient of 1st term will be multiplied by the constant:
1*36 = 36
Now find two numbers whose product is 36 and whose addition is 12.
6*6 = 36
6+6 =12
Now break the middle term:
x^2-6x-6x+36 = 0
Now group the terms:
(x^2-6x) - (6x-36) = 0
Now take common of each group:
x(x-6)-6(x-6) = 0
(x-6) (x-6) =0
(x-6)=0 , (x-6) =0
x-6=0 , x-6=0
x=0+6 , x=0+6
x=6 , x=6
Thus the correct option is C. x=6 only....
