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If x=1x = - 1 Is a Root Of x3+2x2x2=0x ^ { 3 } + 2 x ^ { 2 } - x - 2 = 0

Question 57

Multiple Choice

If x=1x = - 1 is a root of x3+2x2x2=0x ^ { 3 } + 2 x ^ { 2 } - x - 2 = 0 , use synthetic division to factor the polynomial completely and list all real solutions of the equation.


A) (x2) (x+1) (x1) ;x=2,1,1( x - 2 ) ( x + 1 ) ( x - 1 ) ; x = 2 , - 1,1
B) (x+2) (x+1) (x1) ;x=2,1,1( x + 2 ) ( x + 1 ) ( x - 1 ) ; x = - 2 , - 1,1
C) (x+2) (x+1) 2;x=2,1( x + 2 ) ( x + 1 ) ^ { 2 } ; x = - 2 , - 1
D) (x+2) 2(x+1) ;x=2,1( x + 2 ) ^ { 2 } ( x + 1 ) ; x = - 2 , - 1
E) (x+2) (x2) (x1) ;x=2,2,1( x + 2 ) ( x - 2 ) ( x - 1 ) ; x = - 2,2,1

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