FOIL Calculator
Enter any binomial expression and get a beautiful, color-coded step-by-step solution using the First, Outer, Inner, Last method.
Type two binomials - e.g. (x + 3)(x - 5) or (2x - 1)²
展開結果
視覚的分析
First
Outer
Inner
Last
すべての項を結合
簡約結果
What is the FOIL Method?
The FOIL method is a mnemonic for multiplying two binomials. FOIL stands for First, Outer, Inner, Last.
It is based on the distributive property. In (a + b)(c + d), you multiply First (a×c), Outer (a×d), Inner (b×c), and Last (b×d) terms.
After expanding all four pairs, combine any like terms to simplify the expression.
よくある質問
Personalized questions and guidance about this specific tool.
ツール
Choose from our specialized tools to expand, factor, and master algebraic equations step-by-step.