Math Guides

Helpful guides that support the calculators with formulas, examples and explanations.

How to Simplify Square Roots

Learn how to simplify square roots by finding perfect-square factors, with examples like √72, √50 and √128.

Understand perfect squares, how to recognize them, and how to use a perfect-square list for square-root problems.

See how roots and exponents connect, including nth roots, fractional exponents and exponent rules.

Learn the quadratic formula, discriminant and real or complex roots with calculator examples.

Learn mean, median, mode, range, variance and standard deviation using small data sets.

Review common area, perimeter, volume and surface-area formulas for math homework.