Simplify the Following Expression. -9(3b²)

question 50

Multiple Choice

Simplify the following expression. -9(3b²)

• A) -27b²
• B) -27
• C) 27b
• D) -27b
• E) 27b²

---

Definitions:

G. Stanley Hall

A pioneering American psychologist and educator, known for his work in child development and educational psychology.

John Watson

An American psychologist considered one of the founders of behaviorism; he emphasized the study of observable behavior over the study of the mind.

Leo Kanner

An Austrian-American psychiatrist known for his work in child psychiatry, notably for being the first to describe autism as a distinct neurodevelopmental disorder in 1943.

Anna Freud

A pioneering child psychoanalyst and the daughter of Sigmund Freud, known for her theoretical and clinical contributions to the field of psychoanalysis.