Solve the problem.
-$$( r - 15 ) ^ { 2 }$$
A) $\mathrm { r } + 225$
B) $r ^ { 2 } + 225$
C) $225 r ^ { 2 } - 30 r + 225$
D) $r ^ { 2 } - 30 r + 225$

Name: Solve the problem. -\[( r - 15 ) ^ { 2 }\] A) $\mathrm { r } + 225$ B) $r ^ { 2 } + 225$ C) $225 r ^ { 2 } - 30 r + 225$ D) $r ^ { 2 } - 30 r + 225$
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Question

Quizplus · Accepted Answer

Expanding $( r - 15 ) ^ { 2 }$ using the formula $(a - b)^2 = a^2 - 2ab + b^2$ gives $r^2 - 30r + 225$.

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