Question: how to solve a quadratic equation by extracting square roots?
Answer: Solution.
Step 1: Add or subtract the constant term to obtain an equation of the form x2+bx=c. ... 
Step 2: Use (b2)2 to determint the value that completes the square. ... 
Step 3: Add (b2)2 to both sides of the equation and complete the square.
Step 4: Solve by extracting roots.
Answer: