Common Core
A-REI.A.2
4 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Algebra 2 · Chapter 4 · Lesson 1
Rational Functions and Extraneous Solutions
Where the graph breaks, and where answers go wrong.
Algebra 2 · Chapter 5 · Lesson 1
Rational Exponents and Radical Equations
A fractional exponent is a root.
Integrated Math 3 · Chapter 2 · Lesson 3
Clearing the denominators, then checking.
Integrated Math 3 · Chapter 3 · Lesson 2
Squaring can invent solutions.