X^2-3XY+2Y^2分解因式

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X^2-3XY+2Y^2分解因式X^2-3XY+2Y^2分解因式X^2-3XY+2Y^2分解因式X^2-3XY+2Y^2=(x-2y)(x-y)(十字相乘法)或X^2-3XY+2Y^2=X^2-3XY

X^2-3XY+2Y^2分解因式
X^2-3XY+2Y^2分解因式

X^2-3XY+2Y^2分解因式
X^2-3XY+2Y^2=(x-2y)(x-y) (十字相乘法)
或X^2-3XY+2Y^2
=X^2-3XY+2.25Y^2-0.25y^2
=(x-1.5y)^2-0.25y^2
=(x-1.5y+0.5y) (x-1.5y-0.5y)
=(x-y) (x-2y)

分解因式下: X4-2X2-8 =(x -4)(x 2) =(x 2)(x-2)(x 2) X2-3XY 2Y2 =(x-2y)(x-y) 2X2-7X 3 =(2x-1)(x-3) X2 2X-

X^2-3XY+2Y^2=(x-2y)(x-y)