(x+2)(x-13)-16=(x+3)( )
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(x+2)(x-13)-16=(x+3)()(x+2)(x-13)-16=(x+3)()(x+2)(x-13)-16=(x+3)()(x+2)(x-13)-16=(x+3)(x-14)
(x+2)(x-13)-16=(x+3)( )
(x+2)(x-13)-16=(x+3)( )
(x+2)(x-13)-16=(x+3)( )
(x+2)(x-13)-16=(x+3)(x-14)
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