(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)∴2ab/a b≤2ab/2√ab=√ab m<0,n<0,求(√-m)2 (√-n)2

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(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)∴2ab/a b≤2ab/2√ab=√ab m<0,n<0,求(√-m)2 (√-n)2
(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)
∴2ab/a b≤2ab/2√ab=√ab m<0,n<0,求(√-m)2 (√-n)2

(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)∴2ab/a b≤2ab/2√ab=√ab m<0,n<0,求(√-m)2 (√-n)2
AD BE CF=(AB BC CA) (BC/2 CA/2 AB/2)f(2x 1)相对x| |y-2/1|=0相对AD BE CF=(AB BC CA) (BC/2 CA/2 AB/2)