Can someone give me the steps to do this like regroup help?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Given a circle with measures of (c, d, and r) and a circle with measures of (c', d', and r'), what is d if c c' = 12 and d' = 0.50? a) 3 b) 6 c) 12 d) 24

Find all solutions for 2y - 4x =2 y = 2x + 1 site: socratic.org