Q.

If A1,A2be two arithmetic means and G1, G2 be two geometric means between two positive numbers a and b, then A1+A2G1G2 is equal to

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a

aba+b

b

2aba+b

c

a+b2ab

d

a+bab

answer is D.

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Detailed Solution

Use A1+A2=a+b and G1G2=ab.
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