Question Solve the quadratic equation Solve using square roots Solve by factoring Solve using the quadratic formula Load more r1=−1,r2=1 Evaluate r2−1=0Add or subtract both sides r2=1Take the root of both sides of the equation and remember to use both positive and negative roots r=±1Simplify the expression r=±1Separate the equation into 2 possible cases r=1r=−1Solution r1=−1,r2=1 Show Solution Rewrite the equation x2+y2=1 Evaluate r2−1=0Rewrite the expression r2=1Solution x2+y2=1 Show Solution Graph