Упростите выражения
(y-4)²-(y+2)*8=
(k+7)²-14k-50=
15+(0.4+c)²-0.8c²
-9c²+(3c+d)²-d²=
(7b-t) (t+7b)+(7b+t)²=
(11c+3)²-2c(5.5+33)=
(m+8)²-(m-2n) (m+2n)=
(n+15)²-n(n-19) =
(6-5m) (5m+6)+(5m-4)²=
(y-4)²-(y+2)*8=
(k+7)²-14k-50=
15+(0.4+c)²-0.8c²
-9c²+(3c+d)²-d²=
(7b-t) (t+7b)+(7b+t)²=
(11c+3)²-2c(5.5+33)=
(m+8)²-(m-2n) (m+2n)=
(n+15)²-n(n-19) =
(6-5m) (5m+6)+(5m-4)²=
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