x²-2x-(x²+10x+25)= -1
x²-2x-x²-10x-25= -1
-12x-25= -1
-12x=24
-x=2
x= -2
Объяснение:
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Verified answer
x²-2x-(x²+10x+25)= -1
x²-2x-x²-10x-25= -1
-12x-25= -1
-12x=24
-x=2
x= -2
Объяснение: