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solve for all solutions

label Calculus
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solve for all solutions of 2x^3-4x^2-2x+4=0 (unrestricted)

Oct 21st, 2017

this can also be written as ...

2x^3 -4x^2 -2x+4 = 0

2x^3  -2x -4x^2 +4 = 0

2x(x^2 -1)-4(x^2-1) = 0

(2x-4)(x^2-1)=0

2(x-2)(x^2-1) = 0

2(x-2)(x-1)(x+1)=0

all possible solutions are 

x = 2, x=1 , x= -1

Apr 2nd, 2015

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