Question Solve the quadratic equation Solve using square roots Solve by factoring Solve using the quadratic formula Load more x1=−9,x2=9 Evaluate 3x2−21=222Add or subtract both sides 3x2=243Divide both sides 33x2=3243Divide the numbers x2=81Take the root of both sides of the equation and remember to use both positive and negative roots x=±81Simplify the expression x=±9Separate the equation into 2 possible cases x=9x=−9Solution x1=−9,x2=9 Show Solution Graph