Algebra 2 Glossary

A number in the form a+bi with i^2=-1.

For a+bi, the conjugate is a-bi.

For ax^2+bx+c, b^2-4ac determines root type.

A computed value that does not satisfy the original equation or domain.

x-c is a factor of p(x) iff p(c)=0.

A removable discontinuity caused by a canceled denominator factor.

A line y=L approached as x goes to positive or negative infinity.

A function of the form p(x)/q(x) where p and q are polynomials and q(x)!=0.

Remainder from dividing p(x) by x-c equals p(c).

A linear asymptote found when numerator degree is one greater than denominator degree.

A coefficient-based shortcut for division by x-c.

A line x=a that the graph approaches with unbounded values near a.