caricatuchingada
caricatuchingada caricatuchingada
  • 26-05-2017
  • Mathematics
contestada

pls help :0 !!!

factor: 2k^2-13k-24

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 26-05-2017
use ac method
for
y=ax^2+bx+c
mulitply ac ad find what 2 numbers multiply to get ac and add to get b
so
2k^2-13k-24
a=2
b=-13
c=-24

ac=2*-24=-48
what 2 numbers add to -13 and multiply to get -48?
-16 and 3
split middle up

2k^2-16k+3k-24
gropu
(2k^2-16k)+(3k-24)
undistribute
2k(k-8)+3(k-8)
undistribute
(2k+3)(k-8)
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