03dking 03dking
  • 20-02-2019
  • Mathematics
contestada

(x - 5)(x^2 + 4x - 2)

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kreetika0104
kreetika0104 kreetika0104
  • 20-02-2019
I think this is right...but I'm not sure...


( x − 5 )( x 2 + 4 x − 2 )
= ( x + − 5 )( x 2 + 4 x + − 2 )
= ( x )( x 2 ) + ( x )( 4 x ) + ( x )( − 2 ) + ( − 5 )( x 2 ) + ( − 5 )( 4 x ) + ( − 5 )( − 2 )
= x 3 + 4 x 2 − 2 x − 5 x 2 − 20 x + 10
= x 3 − x 2 − 22 x + 10
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teresatapia
teresatapia teresatapia
  • 20-02-2019
Simplifying the expression

2x^3-6x^2 - 22x+10
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