Question

if x = 2 - √5/2 + √5 and y = 2 + √5/2-√5, find the value of x² - y²

Answer 1

Step-by-step explanation:

This is the answer

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Answer 2

Step-by-step explanation:

x=2-√5/2+√5

y=2+√5/2-√5

x²-y²

=(x+y)(x-y)

=(2-√5/2+√5+2+√5/2-√5)[2-√5/2+√5-(2+√5/2-√5)

=2(2-√5/2+√5-2-√5/2+√5)

=2(2*-√5/2+2√5)

=2(-√5+2√5)

=2√5

hope this helps you