–3m(m + 8)
A. –3m2 + 24
B. –3m2 – 24m
C. –24m2
D. –4m + 5
The correct option is B. –3m2 – 24m.
To simplify the expression –3m(m + 8), we need to use the distributive property of multiplication.
–3m(m + 8) = –3m * m – 3m * 8
= –3m2 – 24m
Therefore, the simplified expression is –3m2 – 24m.