x²-12x+26>x²+8x+16⇒
x²-12x+26-x²-8x-16>0⇒
-20x+10>0⇒
-20x>-10⇒
x<1/2
Отв: х∈(-∞;1/2)
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x²-12x+26>x²+8x+16⇒
x²-12x+26-x²-8x-16>0⇒
-20x+10>0⇒
-20x>-10⇒
x<1/2
Отв: х∈(-∞;1/2)