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olga nikolaevna [1]
3 years ago
15

Factor 7x^3+28x^2+21x

Mathematics
1 answer:
jarptica [38.1K]3 years ago
3 0

Answer:

7x (x + 1 ) ( x + 3 )

Step-by-step explanation:

7x³ +28x² +21x

7x ( x² + 4x + 3 )

7x [ x² + 1x + 3x + 3 ]

7x [ x ( x + 1 ) + 3 ( x + 1 ) ]

7x (x + 1 ) ( x + 3 )

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