With the advent of the iPhone and iPad, new apps have come out of the woodwork. Educational apps for kids take up a huge piece of the market. And, I swear, half of those are ABC apps. But, among the ...

Learn how to factor polynomials by grouping. A polynomial is an expression of the form ax^n + bx^(n-1) + . . . + k, where a, b, and k are constants and the exponents are positive integers. To factor ...

Before being mortally wounded in a duel at age 20, Évariste Galois discovered the hidden structure of polynomial equations. By studying the relationships between their solutions — rather than the ...