a = 4/3-root 5 then find the value of a+4/a
sumansagreeka043:
√5 is in denominator or numerator
denominator
4upon 3 minus root 5
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Answer:
answer is about. -13.4
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a=4/3-√5
first of all rationalize it
a=3+√5
a+4/a=3+√5+4/3+√5
(3+√5)^2+4/3+√5
9+5+6√5+4/3+√5
18+6√5/3+√5
By rationalising the denominator
(18+6√5)(3-√5)/(3+√5)(3-√5)
54+18√5-18√5-30/9-5
24/4=6
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