Will sombody me with complete the square on the following quadratic

x^2+16x+2=0

what value is added to both sides of the equation.

Two rigid transformations are used to map abc to qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

Charlie tosses five coins.what is the probability that all five coins will land tails up.