数学题要过程分解因式
X²+4X-12x²+12x-282X²+X-33X²+x-33X²-4X-4A²B=AB²-A-B...
X²+4X-12 x²+12x-28 2X²+X-3 3X²+x-3 3X²-4X-4 A²B=AB²-A-B 3X²+3XY-2X-2Y
(X+2Y)²-8XY (X²XY+Y)²-X²Y² 展开
(X+2Y)²-8XY (X²XY+Y)²-X²Y² 展开
2个回答
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X2+4X-12=(x-2)(x+6)
x2+12x-28 =(x+14)(x-2)
2X2+X-3 =(2x+3)(x-1)
3X2+x-3 =(
3X2-4X-4=(3x+2)(x-2)
A2B+AB2-A-B =AB(A+B)—(A+B)=(A+B)(AB-1)
3X2+3XY-2X-2Y =3X(X+Y)-(X+Y)=(X+Y)(3X-1)
(X+2Y)2-8XY =X^2+4XY+4Y^2-8XY=X^2-4XY+4y^2=(x-2y)^2
(X2XY+Y)2-X2Y2=
x2+12x-28 =(x+14)(x-2)
2X2+X-3 =(2x+3)(x-1)
3X2+x-3 =(
3X2-4X-4=(3x+2)(x-2)
A2B+AB2-A-B =AB(A+B)—(A+B)=(A+B)(AB-1)
3X2+3XY-2X-2Y =3X(X+Y)-(X+Y)=(X+Y)(3X-1)
(X+2Y)2-8XY =X^2+4XY+4Y^2-8XY=X^2-4XY+4y^2=(x-2y)^2
(X2XY+Y)2-X2Y2=
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