1. Absolute Value & Quadratic Functions
Polynomial equations are equations with forms such as y = ax^2 + bx + c or any other equation involving variables to some degree greater than 1. ... They take the form a + bi where a is the real part, and b is imaginary. ... Ultimately, what the quadratic formula (y = -b +/- the square root of b^2 -4ac divided by 2a) tells one is the roots of the equation. ... For example, when solving the following quadratic equation, y = x^2 + 4x + 29, using the quadratic formula where a = 1, b = 4, and c = 29, one, comes out with the solution, -2 + 5i. ...
The Egyptians used the fraction 2/3 used with sums of unit fractions (1/n) to express all other fractions. ... The Egyptians knew how to solve linear (ax=b) and quadratic (ax2+bx=c) equations, as well as indeterminate equations such as x2+y2=z2 where several unknowns are involved (Dauben). ...