kellycoook04
kellycoook04
04-06-2018
Mathematics
contestada
factor out -2x^3+6x+4
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caylus
caylus
04-06-2018
Hi,
[tex]-2x^3+6x+4=-2(x^3-3x-2)\\ =-2(x^3+x^2-x^2-x-2x-2)\\ =-2(x^2(x+1)-x(x+1)-2(x+1))\\ =-2(x+1)(x^2-x-2)\\ =-2(x+1)(x^2+x-2x-2)\\ =-2(x+1)(x(x+1)-2(x+1))\\ =-2(x-2)(x-1)^2 \\ [/tex]
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