Question

(5-√5) (5+√5) simply the expression
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Answer 1

20 is the answer...............

Answer 2

Answer:20

Step-by-step explanation:

We can clearly see it is

A+B(A-B)

=A^2-B^2

5+√5(5-√5)

=5^2-√5^2

=25-5

=20

Hope it helps