分解因式:(3x+2y)²-(x-y)²
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(3x+2y)²-(x-y)²
=[(3x+2y)+(x-y)][(3x+2y)-(x-y)]
=[4x+y][2x+3y]
(x²-1)²+6(1-x²)+9
=(1-x²)²+6(1-x²)+3^2
=(1-x+3)²
=(4-x)²
我打字可是很累的!一定要给分哦!
=[(3x+2y)+(x-y)][(3x+2y)-(x-y)]
=[4x+y][2x+3y]
(x²-1)²+6(1-x²)+9
=(1-x²)²+6(1-x²)+3^2
=(1-x+3)²
=(4-x)²
我打字可是很累的!一定要给分哦!
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(3x+2y)²-(x-y)²
=(3x+2y-x+y)(3x+2y+x-y)
=(2x+3y)(4x+y)
(x²-1)²+6(1-x²)+9
=(x²-1)²-6(x²-1)+9
=(x²-1-3)²
=(x²-4)²
=(x+2)²(x-2)²
=(3x+2y-x+y)(3x+2y+x-y)
=(2x+3y)(4x+y)
(x²-1)²+6(1-x²)+9
=(x²-1)²-6(x²-1)+9
=(x²-1-3)²
=(x²-4)²
=(x+2)²(x-2)²
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(3x+2y)²-(x-y)²
=[(3x+2y)+(x-y)][(3x+2y)-(x-y)]
=[4X+Y][2X+3Y]
(x²-1)²+6(1-x²)+9
=(1-x²)²+6(1-x²)+3^2
=(1-X+3)²
=(4-X)²
=[(3x+2y)+(x-y)][(3x+2y)-(x-y)]
=[4X+Y][2X+3Y]
(x²-1)²+6(1-x²)+9
=(1-x²)²+6(1-x²)+3^2
=(1-X+3)²
=(4-X)²
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(x²-1)²-6(x²-1)²+9
=[(x²-1)-3]²
=(x²-4)²
(3x+2y)²-(x-y)²
=[(3x+2y)+(x-y)][(3x+2y)-(x-y)]
=[4x+y][2x+3y]
=[(x²-1)-3]²
=(x²-4)²
(3x+2y)²-(x-y)²
=[(3x+2y)+(x-y)][(3x+2y)-(x-y)]
=[4x+y][2x+3y]
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