Factor by Grouping $$13 x ^ { 2 } + 91 x - 3 x - 21$$

question 8

Multiple Choice

Factor by grouping. $$13 x ^ { 2 } + 91 x - 3 x - 21$$

• A) \(( 13 x - 3 ) ( x + 7 )\)
• B) \(13 x ( x + 7 ) - 3 ( x + 7 )\)
• C) \(13 x ( x + 7 ) - 3 x + 21\)
• D) \(( 13 x - 3 ) ( x - 21 )\)
• E) \(13 x ^ { 2 } + 91 x - 3 ( x + 7 )\)

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