Simplify the Expression $\frac { 9 x ^ { - 1 } + 9 y ^ { - 1 } } { x ^ { - 1 } - y ^ { - 1 } }$

question 7

Multiple Choice

Simplify the expression. $\frac { 9 x ^ { - 1 } + 9 y ^ { - 1 } } { x ^ { - 1 } - y ^ { - 1 } }$

• A) \(- 18 , x \neq 0 , y \neq 0\)
• B) \(\frac { x + y } { 9 x y } , x \neq 0 , y \neq 0\)
• C) \(\frac { x y } { 9 ( x + y ) } , x \neq 0 , y \neq 0\)
• D) \(\frac { 9 ( x + y ) } { y - x } , x \neq 0 , y \neq 0\)
• E) \(\frac { 9 ( x - y ) } { x y } , x \neq 0 , y \neq 0\)

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Definitions:

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In behavioral psychology, the learned response to a previously neutral stimulus that has become conditioned.

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The affiliation or association with specific groups or communities, which can influence individual identity and behavior.