Question Simplify the expression r2−11 Evaluate r×r−11Solution r2−11 Show Solution Find the roots r1=−11,r2=11Alternative Form r1≈−3.316625,r2≈3.316625 Evaluate r×r−11To find the roots of the expression,set the expression equal to 0 r×r−11=0Multiply the terms r2−11=0Move the constant to the right-hand side and change its sign r2=0+11Removing 0 doesn't change the value,so remove it from the expression r2=11Take the root of both sides of the equation and remember to use both positive and negative roots r=±11Separate the equation into 2 possible cases r=11r=−11Solution r1=−11,r2=11Alternative Form r1≈−3.316625,r2≈3.316625 Show Solution
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