Simplify.
-$3 \cdot(3+4)^{2} - 3 \cdot(5 - 3)^{2}$
A) 405
B) 135
C) 576
D) 157

Name: Simplify. -$3 \cdot(3+4)^{2} - 3 \cdot(5 - 3)^{2}$ A) 405 B) 135 C) 576 D) 157
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Question

Quizplus · Accepted Answer

First, solve the expressions in the parentheses: $3+4=7$ and $5-3=2$. Then, raise each to the power of 2: $7^2=49$ and $2^2=4$. Finally, multiply each by 3 and subtract the second from the first: $3\cdot49=147$ and $3\cdot4=12$, so $147-12=135$.

Simplify - 3⋅(3+4)2−3⋅(5−3)23 \cdot(3+4)^{2} - 3 \cdot(5 - 3)^{2}3⋅(3+4)2−3⋅(5−3)2 A) 405 B) 135 C) 576 D) 157

Simplify
- $3 \cdot(3+4)^{2} - 3 \cdot(5 - 3)^{2}$ A) 405
B) 135
C) 576
D) 157