Completing the square:
find the value of c that completes the square.

1.) x
2.)
3.)

Step-by-step explanation:

Key to this method is remembering that

So, if you divide the coefficient of x by 2 and square it, that will complete the square. With that in mind, things are easy.

6/2 = 3, so add

So, c=9

Similarly, for the other two,

You don't really have to worry about the sign, since squaring will always make it positive

.

step-by-step explanation:

answer: procent 54 wynosi 33,33%