Ответ:
(m-1)x= (m-1)(m+1)
x= -m+1(m-1)(m+1)
x= -m²+m-m²-m+m-1+m+1
x= 2m²+2m-1
x= -c+2+c+2
x=4
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Ответ:
(m-1)x= (m-1)(m+1)
x= -m+1(m-1)(m+1)
x= -m²+m-m²-m+m-1+m+1
x= 2m²+2m-1
x= -c+2+c+2
x=4