CyberStarFox
CyberStarFox
03-05-2017
Mathematics
contestada
How do I factor this
Respuesta :
choco4
choco4
03-05-2017
3x^2 + 2x - 8
you multiply -8 times 3
x^2 + 2x - 24
2 numbers that multiplied give you -24
those 2 numbers have to add to 2
6 times -4 = -24
6 plus -4 = 2
(x + 6) (x - 4)
divide by 3 since you multiplied -8 by it
(x + 6) (x - 4)
/3 /3
because you can't have a fraction you put the denominator as a coefficient of x
(x + 2).( 3x - 4 ).
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