- -1: i²
- Ax²+Bx+C, where A>1: Factor then group
- √-1: i
- Quadratic Formula: -b+-√b²-4ac/2a
- Standard form of complex number: a+bi
- x²+2xy+y²: (x+y)²
- x²+y²: prime
- x²-2xy+y²: (x-y)²
- x²-y²: (x-y)(x+y)
- x³+y³: (x+y)(x²-xy+y²)
- x³-y³: (x-y)(x²+xy+y²)
Intermediate Algebra