Find the sum or difference.
-$$( r - 15 ) ^ { 2 }$$
A) $225 r ^ { 2 } - 30 r + 225$
B) $r ^ { 2 } + 225$
C) $r ^ { 2 } - 30 r + 225$
D) $r + 225$

Name: Find the sum or difference. -\[( r - 15 ) ^ { 2 }\] A) $225 r ^ { 2 } - 30 r + 225$ B) $r ^ { 2 } + 225$ C) $r ^ { 2 } - 30 r + 225$ D) $r + 225$
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Question

Quizplus · Accepted Answer

To find the square of the binomial $(r - 15)^2$, we apply the formula $(a - b)^2 = a^2 - 2ab + b^2$. Here, $a = r$ and $b = 15$, so $(r - 15)^2 = r^2 - 2(r)(15) + 15^2 = r^2 - 30r + 225$.

Find the Sum or Difference (r−15)2( r - 15 ) ^ { 2 }(r−15)2

Find the Sum or Difference $( r - 15 ) ^ { 2 }$