Removing brackets is to multiply the term outside the brackets by each term inside - also known as the distributive law. Use FOIL to remove a pair of brackets then simplify by collecting like terms.

For ax 2 + bx + c = 0, (α, β) = [–b ± √(b 2 – 4ac)]/2ac, where α and β are the roots of the equation. Sum of roots = –b/a Product of roots = c/a If roots of a quadratic equation are given, then the ...

Struggling to remember maths formulas? Learn how the powerful memory palace technique helps students retain equations faster ...

Jesse Schell is, perhaps, the top educational game designer in the business right now. A few months ago I asked him what his favorite educational game was. After a brief pause, he replied, “DragonBox ...

News of a subtle quadratic equation breakthrough has brought algebra forward from the very back of many people’s minds, and algebra is always part of the “when will I ever use this?” rubric people use ...