✖️ Multiplying Binomials

What you’ll learn

1. What Is a BinomialUnderstand what a binomial is and the rule for multiplying two of them.A binomial has two terms, like x + 3. Multiplying two binomials is like finding the area of a rectangle: multiply every term in the first bracket by every term in the second, producing four products to collect.
2. The Grid MethodUse a grid (area model) to expand a product of two binomials.The grid method places each term on the side of a 2×2 box, so every cell is one product. Filling (x + 3)(x + 2) gives x², 2x, 3x and 6; collecting the like x-terms yields x² + 5x + 6.
3. FOIL and SimplifyingApply FOIL, handle negative terms, and collect like terms.FOIL orders the same four products as the grid: First, Outer, Inner, Last. Keep minus signs attached to their terms, then combine like terms — for example (x − 2)(x + 5) = x² + 3x − 10.

Questions this course answers

Grounded in trusted sources

• Khan Academy — Algebra
• OpenStax — Elementary Algebra 2e
• BBC Bitesize — Maths
• Cuemath — Algebra

Every Wunder lesson is built from real, reputable sources — never invented.

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