Question

May someone please help me with this question

Answer 1

2+i or 2-i (D)

Explanation:

First you use the quadratic formula. X= (-b +/-
`\sqrt{b^(2)-4ac }`)/2a

a=1

b=-4

c=5

X= (4 +/-
`√(16-20)`)/2

X=(4 +/-
`√(-4)`)/2

The square root of -4 is 2i. i=√-1. Therefore 2i= 2√-1 .If you simplify that, it becomes √-4i.

X= (4+/- 2i)/2

X= 2+/-i

X= 2+i or 2-i