Respuesta :

aa33

Answer:

The first one

Step-by-step explanation:

x^(2) +7x -8

x^(2) +7x +7/2^(2) +-1*(7/2)^2+-8            Complete the square

x+7/2^(2) +-1 x 7/2^(2) +-8                    Use the binomial formula

x+7/2^(2) +1 x -81/4                                     simplify

1(x+7/2)^2+1 x -81/4