Ayudaaaa xfa, doy coronita
3x² - 5x - 12= 3x² + 9x - 12
= (3x² - ) + (4x - 12)
= 3x ( ) + 4 ( )
= (x - 3) ( )
3x² - 5x - 12= 3x² + 9x - 12
= (3x² - ) + (4x - 12)
= 3x ( ) + 4 ( )
= (x - 3) ( )
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