Since the first coefficient is already equal to 1, just take half the second coefficient (half of 14), then square the result. This must be the constant term on the left side.
-6
NO
6 or -8
5 or -7.
Verde
6 or -8
24
49-apex
it is 121
144
100 equales
25x (square) plus 40 plus 15 equals 680.