z²+z²+4=0 value of z
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The answer to your question is given above in the pic.
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prachi9124:
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Answer:
± i √2
Step-by-step explanation:
z² + z² + 4 = 0
2z² + 4 = 0
z² + 2 = 0 this equation doesn't have roots in the set of real numbers.
In set of complex numbers
z = ± √(-2) = ± √2 × √(-1) ; √(-1) = i
z = ± i√2
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