Algebra

Add, multiply, or invert 2x2 matrices and compute the determinant in seconds — perfect for linear algebra homework and quick checks.

Solve ax² + bx + c = 0 with the quadratic formula: both real roots, the discriminant, and Vieta's sum and product of roots as built-in checks.

Convert numbers to Roman numerals and back, 1 to 3999, with the digit breakdown, rules and date examples.

Find the slope, rise, run and y-intercept of a line from two points. Instant results for ramps, roofs, roads and graph lines.