Equations

Solve equations in standard form ax^2 + bx + c = 0 by checking the discriminant first, then reading the real, repeated, complex, or linear result.

Solve a one-variable equation in the form ax + b = c by isolating x with two inverse moves, then checking special zero-coefficient cases.

Solve a 2x2 system by reading it as two lines, using the determinant to identify one intersection, no solution, or infinitely many solutions.