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Let the expression E=8^a+8^b-3. 2^(a+...

Let the expression `E=8^a+8^b-3. 2^(a+b)` takes its minimum value p at `a=alpha&b=beta` , then perpendicular distance of the point `P(alpha,beta)` from the line `x+y+2p=0` is 1 (2) 0 (3) `1/(sqrt(2))` (4) `sqrt(2)`

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