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y=x2﹣x﹣2 y=x2﹣x+2 y=x2+x﹣2 y=x2+x+2
y=-x2+2x+3 y=x2+2x+3 y=-x2+2x-3 y=-x2-2x+3
x2+2 x2+3x+2 x2+3x+3 x2+2x+2
2x(x+3)2 2x(x-3)2 2x(x2-9) 2x(x+3)(x-3)
g(x)=2x2-3x g(x)=3x2-2x g(x)=3x2+2x g(x)=-3x2-2x
x﹣2=2x x2﹣2x=2x x﹣2=x x=2x﹣4
y=-x2+2x+3 y=x2+2x+3 y=-x2+2x-3 y=-x2-2x+3
2x2,x,3 2x2,﹣x,﹣3 2x2,x,﹣3 2x2,﹣x,3
2x-x=x2 x+y=xy 2x2-x2=x2 6x-3x=3
y=x2﹣2x+3 y=x2﹣2x﹣3 y=x2+2x﹣3 y=x2+2x+3
y=1-2x2 y=2(x+5)2-6 y=3(x-1)(x-4) y=(x-2)2-x2
x2+y2-px-qy=0 x2+y2+px-qy=0 x2+y2-px+qy=0 x2+y2+px+qy=0
y=2x2-2x-4 y=-2x2+2x-4 y=x2+x-2 y=2x2+2x-4
3x(x2﹣4x+4) 3x(x﹣4)2 3x(x+2)(x﹣2) 3x(x﹣2)2
x2+x=1 2x2﹣x﹣12=12 2(x2﹣1)=3(x﹣1) 2(x2+1)=x+2
(x-1)2 x(x-1)2 x(x2-2x+1) x(x+1)2
2x·(2x3+3x-1)=4x4+6x2-2x b(b2-b+1)=b3-b2+b
-x(2x2-2)=-x3-x
x(x3-3x+1)=x4-2x2+x
x(x+2)(x﹣2) (x2﹣2x)(x2﹣4) (x+2)(x﹣2) x(x﹣2)(x﹣4)