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y=x3+6x2+9x y=x3-6x2+9x y=x3-6x2-9x y=x3+6x2-9x
a3+a3=a6 (3x)2=6x2 (x+y) 2= x2+y2 (-x-y)(y-x)=x2-y2
直线x=﹣3 直线x=6 直线x=3 直线x=﹣6
2x+3y=5xy (﹣2x2)3=﹣6x6 3y2•(﹣y)=﹣3y2 6y2÷2y=3y
a2+a2=a4 (3x)2=6x2 (x2)3=x6 (x+y)2=x2+y2
﹣6x2﹣15x2﹣3x ﹣6x3+15x2+3x ﹣6x3+15x2 ﹣6x3+15x2﹣1
﹣2x+3x=x 6xy2÷2xy=3y (﹣2x2y)3=﹣6x6y3 2xy2•(﹣x)=﹣2x2y2
-2x+3 -6x2+4x -6x2+4x+3 -6x2-4x+3
5x3+2x 6x3+1 6x3+2x 6x2+2x
(-2x3y2)3=-6x9y6 -3x2·x3=-3x6 (-x3)2=-x6 x10÷x6=x4
3x+3y=6xy ﹣y2﹣y2=0 3(x+8)=3x+8 ﹣(6x+2y)=﹣6x﹣2y
y=6x+5 y=6x﹣5 y=﹣6x+5 y=﹣6x﹣5