Parviz F. answered • 02/17/14

Tutor

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Mathematics professor at Community Colleges

- X^2 + 2X - 4 =0

- ( X^2 - 2x + 4 ) = 0

-( X^2 -2X +1 + 4 -1 ) =0

- ( ( X - 1) ^2 + 3 ) =0

-[ ( X - 1 )^ 2 = -3 ] = 0

1 +i < X < 1 +2 i 1 -i <X < 1-2i

Note: 1 < √3 < 2