Factorising an expression means finding the factors that multiply together to give that expression. For \(\mathbf{x^2 + 5x + 6}\), the first step is to find two numbers whose sum is 5 and whose ...

As leaders of science and engineering departments at a public university, we have front row seats to the outcomes of America’s approach to kindergarten-12th grade (K-12) math education. We see ...

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Searching your file system can be tricky. For example, do you sometimes find it difficult to be specific or exact? Or perhaps it's too noisy? Regex can solve these issues and more. It's powerful, ...