University of St. Andrews (UK)
University of St. Andrews: Al Karaji
This mathematician contributed to many areas of mathematics, but most importantly he developed the formula to multiply exponents.
Calculator Soup
Calculator Soup: Math Equation Solver
Solve math problems using order of operations like PEMDAS, BEDMAS and BODMAS. This calculator solves math equations that add, subtract, multiply and divide positive and negative numbers and exponential numbers. You can also include...