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Factoring ax^2+bx+c, a is not 1 - The Learning Lab at HFCC

Factoring ax^2+bx+c, a is not 1 - The Learning Lab at HFCC

Factoring ax^2+bx+c, a is not 1 - The Learning Lab at HFCC

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7) m • n = 70 and m n 37210 37 7y− y += − − +210y 2y 35y72y ( 5y 1) 7( 5y1)( 5y1)( 2y7)= − − −= − −8) m • n = − 4 and m n 322x− 3x− 2= − + −22x 4x 1x22x( x 2) 1( x 2)( 5a1)( a 4)= − + −= − +9) m• n = 14 and m + n = − 5+ = − ( m = − 2, n = − 35)+ = − ( m = − 4, n = + 1)No integers work <strong>not</strong> factorable using integers.10) = ( 6x + y)( x + 2y)11) m • n = − 20 and m n 15a − ab − 4b2 2= 5a + 4ab − 5ab − 4b2 2a( 5a 4b) b( 5a 4b)( 5a 4b)( a b)= + − += + −+ = − ( m = + 4, n = − 5)12) No integers work <strong>not</strong> factorable using integers.13) m • n = 21 and m n 223r − 22rs + 7s2 2= 3r −1rs − 21rs + 7s2 2r ( 3r s) 7s( 3r s)( 3r s)( r 7s)= − − −= − −14) = 2x( 3x − 5)( x + 2)+ = − ( m = − 1, n = − 22)Rev<strong>is</strong>ed 03/09 8

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