This deep dive covers Advanced: Double Brackets within Expanding Brackets for GCSE Mathematics. Revise Expanding Brackets in Algebra for GCSE Mathematics with 14 exam-style questions and 3 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 8 of 13 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Advanced: Double Brackets
When you multiply two brackets together, you're essentially finding the area of a rectangle where the sides are algebraic expressions. Think of (x + 3)(x + 2) as a rectangle with width (x + 3) and height (x + 2). To find the total area, you need to multiply every term by every other term!
Practice questions for Expanding Brackets
Which expression is equivalent to 3(x + 2)?
Expand -2(3x - 5)
Quick recall flashcards
Expansion Rule
a(b + c) = ab + ac - multiply EVERY term inside by the term outside
Sign Rules
Positive × Positive = Positive | Negative × Negative = Positive | Different signs = Negative