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3 years ago

What are the solutions of x^2-2x+5=0? A. X=2i or x=-2i. B. X=1+2i or x=1-2i. C. X=2+i or x=2-i. D. X=2+2i or x=2-2i

Mathematics

1 answer:

satela [25.4K]3 years ago

7 0

Answer:

B. x=1+2i or x=1-2i.

Step-by-step explanation:

The equation is given as;

x²-2x+5=0

complete the square method to find value of x as;

x²-2x = -5

x²-2x + 1 = -5 + 1

x²-2x +1 =-4

( x-1 )² = -4

x-1 = ±√-4 ---------<em>where √-1 = i</em>

x-1 =± 2i

So;

x-1 = + 2i

x= 1+2i

x= 1-2i

x= 1-2i

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