Question

if X=(2+root5)^1/2+(2-root)^1/2 and y=(2+root5)^1/2-(2-root5)^1/2 then evaluate x^2 +y^2 solve on a paper please​

Answer 1

Step-by-step explanation:

use formula

(a±b)^2=a^2±2ab+b^2

√-1= i

where i is complex number.

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Answer 2

Answer:

4 (2+root5)

Step-by-step explanation:

break it on (a+b)^2