An equation is a mathematical statement showing that two expressions are equal. The two expressions are linked with an equals symbol (=). The unknown variable (often the letter \(x\)) can take any ...

Which Algebra for Dummies book is best? In short, algebra is dealing with problems involving variables and unknowns. It can range from something as simple as finding a single exponent — labeled “x” — ...

I know an engineer who never bothered to memorize Ohm’s law. She says that when she needs it, she can always derive it from Maxwell’s equations. On the other hand, despite the fact that I aced my ...