x²-2x+5=0 find the roots
Answers
Answered by
13
It is given that x²+ 2x - 5 = 0
x² + 2x = 5
x² + 2 × x × 1 + 1² = 5 + 1²
( x + 1 )² = 6
( x + 1 ) = ± √6
x = ±√6 - 1
x = √6 - 1 or x = -√6 - 1
Answered by
6
Answer:
1±2i
Step-by-step explanation:
x²-2x+5=0
x = 2±√4-20 ÷2 = 1±2i
i is the immaginery unit
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