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x2-6x+32=-7 x2-6x+32=2 x2-6x+9=13 x2-6x+6=-1
(c= =2)‖(c= =4)‖(c= =6) (c>=2&&c<=6)‖(c!=3)‖(c!=5) (c>=2&&c<-6)&&!(c%2) (c>=2&&c<=6)&&(c%2!=1)
﹣5+(+3)+(+6)+(﹣2) ﹣5+(﹣3)+(+6)+(+2) (﹣5)+(+3)+(+6)+(+2) (﹣5)+(+3)+(﹣6)+(+2)
﹣6﹣7+2﹣9 ﹣6﹣7﹣2+9 ﹣6+7﹣2﹣9 ﹣6+7﹣2+9
(﹣2,6) (﹣6,﹣2) (﹣2,﹣6) (6,2)
(c==2)‖(c==4)‖(c==6) (c>=2&&c<=6)‖(c!=3)‖(c!=5) (c>=2&&c<=6)&&!(c%2) (c>=2&&c<=6)&&(c%2!=1)
-2%~+2% -2%~+6% -6%~+2% -6%~+6%
(c==2)‖(c==4)‖(c==6) (c>=2&&c<=6)‖(c!=3)‖(c!=5) (c>=2&&c<=6)&&!(c%2) (c>=2&&c<=6)&&(c%2!=1)
﹣6﹣3+7﹣2 6﹣3﹣7﹣2 6﹣3+7﹣2 6+3﹣7﹣2
(x-4)2+(y-6)2=6 (x+4)2+(y-6)2=6或(x-4)2+(y-6)2=6 (x-4)2+(y-6)2=36 (x+4)2+(y-6)2=36或(x-4)2+(y-6)2=36
[-2,2] (-2,2) [-2,2] (-2,2)
(﹣7)+(+6)+(﹣5)+(﹣2)=﹣7++6+﹣5+﹣2 (﹣7)+(+6)+(﹣5)+(﹣2)=﹣7+6﹣5﹣2 (﹣7)+(+6)+(﹣5)+(﹣2)=﹣7+6+5+2 (﹣7)+(+6)+(﹣5)+(﹣2)=﹣7+6﹣5+2
-6-3+7-2 6-3-7-2 6-3+7-2 6+3-7-2
sheet2A6 sheet2!A6 sheet2:A6 sheet2*A6
由2x﹣3(4﹣2x)=6得2x﹣12﹣2x=6 由2x﹣3(4﹣2x)=6得2x﹣12﹣6x=6
由2x﹣3(4﹣2x)=6得2x﹣12+6x=6 由2x﹣3(4﹣2x)=6得2x﹣12﹣6x=6
(x-4)2+(y-6)2=6 (x±4)2+(y-6)2=6 (x-4)2+(y-6)2=36 (x±4)2+(y-6)2=36
-6-3+7-2 6-3-7-2 6-3+7-2 6+3-7-2