hello,

you need to equal the equation to zero , then pass 164 to the other side of the equation .

so you will have x^2+ 2x = -164.

Then, you need multiply 2x by 1/2. The result, which is 1, must be written on both sides of the equation.

x^2+2x+1= -164+1

At this point, you have already completed the square, and you only need to reduce both sides of the equation.

(x+1)^2 = -163

(x+1)^2 + 163

Therefore, a = 1 and b = 163