What is the simplified expression for 3 A squared plus 9 A b plus 5 minus 4 A squared minus 4 A b plus 3 ?
Answer
A
A squared plus 5 A b plus 8
B
negative A squared minus 13 A b plus 5 plus 3
C
A squared minus 13 A b plus 5 plus 3
D
negative A squared plus 5 A b plus 8
Explanation
Combine like terms: 3A² − 4A² = −A², and 9Ab − 4Ab = 5Ab. The constants add to 5 + 3 = 8, so the simplified expression is −A² + 5Ab + 8, which is choice D.
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