Factor by Grouping $$3 x ^ { 2 } + 21 x - 7 x - 49$$

question 81

Multiple Choice

Factor by grouping. $$3 x ^ { 2 } + 21 x - 7 x - 49$$

• A) \(( 3 x - 7 ) ( x + 7 )\)
• B) \(3 x ^ { 2 } + 21 x - 7 ( x + 7 )\)
• C) \(3 x ( x + 7 ) - 7 ( x + 7 )\)
• D) \(3 x ( x + 7 ) - 7 x + 49\)
• E) \(( 3 x - 7 ) ( x - 49 )\)

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