Use Special Products in Polynomial Multiplication
-$( 9 - 5 x ) ^ { 2 }$
A) $81 - 90 x + 25 x ^ { 2 }$
B) $81 + 25 x ^ { 2 }$
C) $81 x ^ { 2 } - 90 x + 25$
D) $81 - 90 x - 25 x ^ { 2 }$

Name: Use Special Products in Polynomial Multiplication -$( 9 - 5 x ) ^ { 2 }$ A) $81 - 90 x + 25 x ^ { 2 }$ B) $81 + 25 x ^ { 2 }$ C) $81 x ^ { 2 } - 90 x + 25$ D) $81 - 90 x - 25 x ^ { 2 }$
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Question

Quizplus · Accepted Answer

Using the formula $(a - b)^2 = a^2 - 2ab + b^2$, where $a = 9$ and $b = 5x$, we get $81 - 2(9)(5x) + (5x)^2 = 81 - 90x + 25x^2$.

Use Special Products in Polynomial Multiplication - (9−5x)2( 9 - 5 x ) ^ { 2 }(9−5x)2

Use Special Products in Polynomial Multiplication
- $( 9 - 5 x ) ^ { 2 }$