{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://askcalculators.com/calculator/foil-method-calculator/schema.json",
  "title": "FOIL Method Calculator inputs",
  "description": "Expand two linear binomials using the FOIL method.",
  "type": "object",
  "properties": {
    "a": {
      "title": "a in (ax + b)",
      "type": "number",
      "default": 2,
      "x-step": 0.001
    },
    "b": {
      "title": "b in (ax + b)",
      "type": "number",
      "default": 3,
      "x-step": 0.001
    },
    "c": {
      "title": "c in (cx + d)",
      "type": "number",
      "default": 4,
      "x-step": 0.001
    },
    "d": {
      "title": "d in (cx + d)",
      "type": "number",
      "default": -5,
      "x-step": 0.001
    }
  },
  "required": [
    "a",
    "b",
    "c",
    "d"
  ],
  "additionalProperties": false,
  "x-askcalculators": {
    "version": "1.0.0",
    "calculatorUrl": "https://askcalculators.com/calculator/foil-method-calculator/",
    "queryExample": "https://askcalculators.com/calculator/foil-method-calculator/?a=2&b=3&c=4&d=-5",
    "migrationStatus": "new",
    "reviewStatus": "pending",
    "pageStatus": "live",
    "workStatus": "pending",
    "formula": {
      "expression": "(ax + b)(cx + d) = acx² + (ad + bc)x + bd"
    },
    "quality": {
      "availability": "live",
      "technicalReviewRecord": "/reviews/foil-method-calculator.json",
      "qualifiedReview": "pending",
      "qualifiedReviewer": null,
      "qualifiedReviewDate": null,
      "formulaVersion": "1.0.0",
      "referenceCoverage": "references-pending",
      "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
      "historicalMetadataDate": "2026-09-01",
      "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
    },
    "outputs": {
      "expanded": {
        "title": "Expanded polynomial",
        "type": "string",
        "x-format": "text",
        "x-primary": true
      },
      "xSquaredCoefficient": {
        "title": "x² coefficient",
        "type": "number",
        "x-format": "number",
        "x-digits": 8
      },
      "xCoefficient": {
        "title": "x coefficient",
        "type": "number",
        "x-format": "number",
        "x-digits": 8
      },
      "constant": {
        "title": "Constant",
        "type": "number",
        "x-format": "number",
        "x-digits": 8
      },
      "steps": {
        "title": "FOIL terms",
        "type": "string",
        "x-format": "text"
      }
    }
  }
}