Mathematics - TEAS Study Guide | Nurse.org
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Algebraic Expressions & Simplifying

Why This Matters for Nursing: Dosing formulas often contain variables. "Dose = Weight × 2.5 + 10" is an algebraic expression. Understanding how to read and simplify these helps you use medical formulas correctly.

What You Need to Know

An algebraic expression combines numbers, variables, and operations:

  • Variable: A letter representing an unknown value (x, y, n, w)
  • Coefficient: The number multiplied by a variable (in 3x, the coefficient is 3)
  • Constant: A number without a variable (in 3x + 5, the constant is 5)
  • Term: Parts separated by + or - signs (in 3x + 5, there are 2 terms)

Like Terms

Like terms have the same variable raised to the same power:

  • 3x and 5x are like terms ✓
  • 3x and 3x² are NOT like terms ✗
  • 4 and 7 are like terms (both constants) ✓

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