y = x + 3\) is a linear equation and \(y = x^2 + 3x\) is a quadratic equation. If the product of two numbers is zero, then one or both numbers must also be equal to zero. To solve, put each ...

Rearrange the equation to get all terms on 1 side, so subtract \(x\) and \(-3\) from both sides ... the 2 values for \(x\) into the original linear equation.

A MECHANICAL calculating machine for solving simultaneous linear equations up to ten in number under construction at the Massachusetts Institute of Technology by Drs. V. Bush and J. B. Wilbur was ...