Answer :

Space

Answer:

-100d⁴ + 125d²s - 6s²

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Algebra I

  • Terms/Coefficients
  • Expand by FOIL

Step-by-step explanation:

Step 1: Define

Identify

(-20d² + s)(5d² - 6s)

Step 2: Expand

  1. FOIL:                                                                                                                  -100d⁴ + 120d²s + 5d²s - 6s²
  2. [Addition] Combine like terms:                                                                        -100d⁴ + 125d²s - 6s²

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