In a quadratic expression, the highest power of \(x\) is \(x^2\). Factorise \(x^2 + 7x + 10\). To factorise this expression, find two numbers that have a product of +10 and a sum of +7. There are a ...

THIS little book deserves the title of Practical Mathematics better than any work that we have seen. The subjects dealt with are arithmetic, plane geometry, algebra, mensuration and analytic geometry.