Multiply.
-$( 9 x - 10 ) ^ { 2 }$
A) $81 x ^ { 2 } + 100$
B) $9 x ^ { 2 } - 180 x + 100$
C) $9 x ^ { 2 } + 100$
D) $81 x ^ { 2 } - 180 x + 100$

Name: Multiply. -$( 9 x - 10 ) ^ { 2 }$ A) $81 x ^ { 2 } + 100$ B) $9 x ^ { 2 } - 180 x + 100$ C) $9 x ^ { 2 } + 100$ D) $81 x ^ { 2 } - 180 x + 100$
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Question

Quizplus · Accepted Answer

When you square the expression $(9x - 10)^2$, you use the formula $(a - b)^2 = a^2 - 2ab + b^2$, where $a = 9x$ and $b = 10$. Squaring each and multiplying gives $81x^2 - 180x + 100$.

Multiply - (9x−10)2( 9 x - 10 ) ^ { 2 }(9x−10)2

Multiply
- $( 9 x - 10 ) ^ { 2 }$