completing the square quadratic & mid point formula

When i’m doing completing the square quadratic, what’s the first step after ive the equation like (x+a) + b

the turning point is (-a,b) meaning if a is positive in the brackets, its negative in the turning point and vice versa

what’s the second step

sub y in as 0 to find x intercept/s

what’s the midpoint formula

add the two x values, divide that by 2, and do the same with the two y values to get the x and y coordinates which make a point (x,y)

how to find the angle of inclination?

tan^-1(gradient)