Name ______________________ Assignment 8 5. 2x + 21x + 40 2 Factor each of the quadratic expressions Factor twice, first the GCF and then factor again. 1. 2x 2 + 9x − 18 1. 3x 3 − 75x 6. 9x 2 − 21x + 10 2. 5x 2 + 9x − 2 2. 2x 3 + 16x 2 + 30x 7. 25x 2 − 30x + 9 3. x 2 + 10x + 24 3. 3x 3 + 12x 2 + 12x 8. 9x 2 − 49 4. x 2 − 49 4. 4x 3 − 4x 2 − 24x Multiply, foil or expand. Review Use the exponent rules. 1. ( 2x y ) 2 5. (x − 3)(3x 2 − 2x + 5) 4 6. (x + 3)(2x − 5) 2. ( 3a b z ) 2 3 5 3 7. (x − 6)2 3. 4. ( 2ab )( −3a 2b )( −5b 3 ) 8. ( 3x − 1)( 5x + 1) 9. ( 6x + 5 )2 ( 2x y ) ( −xy ) ( −xy ) 2 3 3 2 2
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