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2x>3y>5z 3y>5z>2x 3y>2x>5z 2x>5z>3y
-3x2y·5x2y=2x2y -2x2y3·2x3y=-2x5y4 35x3y2÷5x2y=7xy (-2x-y)(2x+y)=4x2-y2
2x+3y=5xy (﹣2x2)3=﹣6x6 3y2•(﹣y)=﹣3y2 6y2÷2y=3y
3a+2b=5ab 2ab-2ba=0 5y2-2y2=3 3x2y-5xy2=2x2y
2x+3y=5xy 3x﹣x=3 2x+3x=5x2 ﹣x2﹣x2=﹣2x2
y=3x2+2x﹣5 y=3x2+2x﹣4 y=3x2+2x+3 y=3x2+2x+4
y=﹣2x2+8x+3 y=﹣2x‑2﹣8x+3 y=﹣2x2+8x﹣5 y=﹣2x‑2﹣8x+2
)2x(3x-2)=5x2-4x ( )(2y +3x)(3x-2y)=9x2-4y2 ( )(x+2) 2=x2+2x+4 ( )(x+2)(2x-1)=2x2+5x-2
(2x﹣3y)(2x+3y) (2x﹣3y)(﹣2x+3y) (2x﹣3y)(﹣2x﹣3y) (﹣2x+3y)(2x+3y)
3x2+2x2=5x 4 (-x2)3=-x 6 (2x2y)2=2x4y2 (x+y2)2=x2+y4
﹣2x+3x=x 6xy2÷2xy=3y (﹣2x2y)3=﹣6x6y3 2xy2•(﹣x)=﹣2x2y2
3x2y•5xy2=-2x2y -2x2y3•2xy=-2x3y4 28x4y2÷7x3y=4xy (-3a-2)(3a+2)=9a2-4
2x<3y<5z 3y<2x<5z 5z<3y<2x 5z<2x<3y
(4x-3y)(-3y-4x) (2x2-y2)(2x2+y2) (a+b-c)(-c-b+a) (-x+y)(x-y)
x2+x2=x4 x2+x3=2x5 3x﹣2x=1 x2y﹣2x2y=﹣x2y
(xy)3=xy3 x5÷x5=x 3x2•5x3=15x5 5x2y3+2x2y3=10x4y9
(y﹣x)(x+y) (2x﹣y)(﹣y﹣2x) (x﹣3y)(﹣3y+x) (4x﹣5y)(5y+4x)