Every Candidate Is Guilty Until Checked

Rational, radical, and absolute-value equations are quick to solve and easy to over-trust, because each one manufactures false candidates the algebra alone will not catch. Watch where the points leak — an extraneous solution reported without a check, a value that makes a denominator zero handed back as an answer, and only one case of an absolute value solved when there were two.

8 STEPS · 6 QUICK CHECKS · solve, then CHECK · two cases, or none · v1