Ответ:
x2 +(m² -2m)x-7=0
2x +(m² -2m)x-7=0
xm²-2xm+2x-7=0
a=x, b= -2x, c=2x-7
m=-(-2)x+4√(-2x)2-4x×(2x-)/2x
m=2x+√4x2-8x²+28x/2x
m=2x+2√-x²+7x/2x
m=2x-2√-x²+7x/2x
m=x+√-x²+7x/x
m=x-√-x²+7x/x
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Ответ:
x2 +(m² -2m)x-7=0
2x +(m² -2m)x-7=0
xm²-2xm+2x-7=0
a=x, b= -2x, c=2x-7
m=-(-2)x+4√(-2x)2-4x×(2x-)/2x
m=2x+√4x2-8x²+28x/2x
m=2x+2√-x²+7x/2x
m=2x+2√-x²+7x/2x
m=2x-2√-x²+7x/2x
m=x+√-x²+7x/x
m=x-√-x²+7x/x