The value of (5 + √5) (5 − √5) is 0 25 20 -20 ​

Question

The value of (5 + √5) (5 − √5) is 

0

25

20

-20

in progress 0
Aubrey 2 months 2021-08-11T13:54:18+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-11T13:55:36+00:00

    Answer:

    20

    Step-by-step explanation:

    (5+√5) (5-√5)=(a+b) (a-b)=a²-b²

    =(5)²-(√5)²

    =25-5

    =20

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