Mathematics

• In an algebraic expression, variables represent unknown quantities and can be represented by letters or symbols.
• An exponent represents repeated multiplication of a base.
• The ± in the quadratic formula indicates that the quadratic equation may have a pair of solutions, one positive and one negative.
• The quadratic formula states that the solutions for x are: x = [-b ±√(b2-4ac)] / 2a.
• A coefficient is the number that appears to the left of a variable in an algebraic expression.