[tex]\displaystyle c(c-2)-(2-c)^2=c(c-2)-(-(c-2))^2=c(c-2)-(c-2)=(c-2)(c-(c-2))=(c-2)(c-c+2)=(c-2)*2=2(c-2)[/tex]
Ответ:
Известно свойство: [tex](a-b)^2=(b-a)^2[/tex] , поэтому [tex](2-c)^2=(c-2)^2[/tex] .
[tex]c\, (c-2)-(2-c)^2=c\, (c-2)-(c-2)^2=(c-2)\, (c-(c-2)\, )=\\\\=(c-2)(c-c+2)=(c-2)\cdot 2=\underline{2\, (c-2)\ }[/tex]
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[tex]\displaystyle c(c-2)-(2-c)^2=c(c-2)-(-(c-2))^2=c(c-2)-(c-2)=(c-2)(c-(c-2))=(c-2)(c-c+2)=(c-2)*2=2(c-2)[/tex]
Ответ:
Известно свойство: [tex](a-b)^2=(b-a)^2[/tex] , поэтому [tex](2-c)^2=(c-2)^2[/tex] .
[tex]c\, (c-2)-(2-c)^2=c\, (c-2)-(c-2)^2=(c-2)\, (c-(c-2)\, )=\\\\=(c-2)(c-c+2)=(c-2)\cdot 2=\underline{2\, (c-2)\ }[/tex]