determine a and b from the question in the photo.
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0
Answer:
Well, first you need to simplify your expression.
How ?
Simple! By rationalising.
(7+√5)/(7-√5) - (7-√5)/7+√5)
Rationalise both the terms
(7+√5)² - (7-√5)²/ 49 - 5
= 49 + 14√5 + 5 - 49 + 14√5 - 5/ 44
= 28√5/44
= 7√5/11
Now, 7√5/11 = a + (7/11) √5b
On comparison,
a = 0
b = 1
harshkandpal:
plz mark me as brainliest
it's wrong
the answer is a=0 and b=1/11
I just need the explanation
Answered by
1
Answer:
in the attachment , step wise solutions
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thanks so much for the answer
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