Question

Find the value of c that completes the square.

Answer 1

Your answer would be C. This is because you must find factors of c that multiply to c itself, but add to -14(b). -7×-7 equals 49, but they add to -14.

Answer 2

For this case we must obtain the value of "c" to complete squares.

If we have:

$y ^ 2-14y + c$

To complete squares we do the following:

We divide the middle term by 2 and raise the expression squared. That will be the value of "c", that is:

$c = (\frac {-14} {2}) ^ 2\\c = 49\\ y^ 2-14y + 49$

Answer:

$c = 49$

Option C