Logarithm Multiple Choice, Brainliest for correct answer!

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