(5+√5)(√5-√5) is
please answer this if you know
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Answered by
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Answer:
(5+ root 5)(root 5 - 5)
gives you (5²-root5²)
which is equal to 25-5= 20
by using a²-b² formula
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Answered by
0
Answer:
Correct question -
(5+√5)(5-√5)
Answer -
= 5²-(√5)²
= 25-5
= 20
Formula used -
(a+b)(a-b) = a²-b²
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