Find All X-Intercepts of the Function $$f ( x ) = 7 x ^ { - 2 } + 8 x ^ { - 1 } + 1$$

question 197

Multiple Choice

Find all x-intercepts of the function.
- $$f ( x ) = 7 x ^ { - 2 } + 8 x ^ { - 1 } + 1$$

• A) \[\left( - \frac { 1 } { 7 } , 0 \right) , ( - 1,0 )\]
• B) \[\left( \frac { 1 } { 7 } , 0 \right) , ( 1,0 )\]
• C)(1, 0), (7, 0)
• D)(-1, 0), (-7, 0)

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