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The real number system

2x3-x2+2x-1=0 
 
help me solve this 

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Robert J. | Certified High School AP Calculus and Physics TeacherCertified High School AP Calculus and Ph...
4.6 4.6 (13 lesson ratings) (13)
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You can do it by regrouping.
 
2x3-x2+2x-1=0
=> x2(2x-1) + (2x-1) = 0
=> (x2+1)(2x-1) = 0
Answer: x = 1/2 (in real system), i and -i (in complex system).

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