4 + x + X2 = 0 by completing square method
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HOPING THAT YOU KNOW THE METHOD.
Step-by-step explanation:
x^2 + x + 4 = 0
x^2 + x + 1/4 - 1/4 + 4 = 0
(x + 1/2)^2 -1/4 + 4 =0
(x + 1/2)^2 + 17/4 = 0
(x + 1/2)^2 = -17/4
(x + 1/2) = +-√(-17/4)
x = -1/2 +-√(17/4) i i means iota = √(-1)
x = (-1 +- √17 i)/2
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