人教出版初级中学九年级数学上册因式分解法解一元二次方程综合练习进步知识学习题集.doc

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,. x2-8x=-16 49x2-225=0 x(3x-5)=9x-15 (x+2)2=(8-x)2 8x2+4x=0 4x2-x=0 x2-6x=-9 100x2-9=0 2x(3x-5)=6x-10 (x+5)2=(2+x)2 6x2-4x=0 3x2+5x=0 x2+16x=-64 49x2-361=0 x(4x+5)=16x+20 (4x+5)2=(3-5x)2 2x2+8x=0 3x2-x=0 x2+6x=-9 100x2-400=0 x(4x-6)=16x-24 (5x+2)2=(1+3x)2 3x2-5x=0 6x2+5x=0 x2-14x=-49 36x2-100=0 x(4x+3)=12x+9 (3x-3)2=(8+x)2 8x2-8x=0 9x2-3x=0 x2+6x=-9 49x2-144=0 x(3x-9)=12x-36 (8x+5)2=(9-7x)2 3x2+x=0 9x2+2x=0 x2+20x=-100 100x2-361=0 2x(4x+4)=16x+16 (x-8)2=(4+x)2 3x2+8x=0 9x2+2x=0 x2+12x=-36 16x2-324=0 x(3x-3)=9x-9 (6x+3)2=(1+6x)2 2x2+2x=0 7x2-x=0 x2-2x=-1 64x2-289=0 x(2x+2)=8x+8 (x+1)2=(9+9x)2 9x2-9x=0 9x2-4x=0 x2+14x=-49 4x2-9=0 x(3x-8)=12x-32 (x-4)2=(4+x)2 x2-4x=0 3x2-x=0 x2+14x=-49 100x2-25=0 x(3x+6)=18x+36 (8x-9)2=(6+4x)2 3x2+8x=0 x2-x=0 x2-4x=-4 100x2-225=0 x(3x+5)=15x+25 (x+1)2=(3-x)2 9x2-9x=0 5x2+3x=0 x2+16x=-64 81x2-324=0 3x(4x-2)=20x-10 (x+9)2=(6+x)2 x2+x=0 6x2+5x=0 x2+8x=-16 64x2-25=0 2x(4x+1)=24x+6 (7x+8)2=(2-2x)2 7x2+4x=0 9x2-4x=0 x2+2x=-1 81x2-324=0 2x(2x+1)=4x+2 (2x-6)2=(7-6x)2 8x2-5x=0 x2-3x=0 x2-16x=-64 64x2-144=0 2x(4x-1)=24x-6 (3x+2)2=(2-9x)2 4x2+3x=0 4x2-x=0 x2-8x=-16 49x2-16=0 x(3x+3)=6x+6 (5x+6)2=(8+x)2 3x2+6x=0 5x2+5x=0 x2+20x=-100 64x2-225=0 x(2x-3)=8x-12 (x-5)2=(3-x)2 4x2-6x=0 5x2+4x=0 x2+2x=-1 36x2-64=0 x(4x+1)=20x+5 (x+6)2=(3-7x)2 9x2+4x=0 8x2-4x=0 x2+18x=-81 64x2-9=0 x(4x+3)=16x+12 (x+9)2=(10-8x)2 7x2+x=0 4x2-3x=0 x2+18x=-81 25x2-36=0 2x(2x+4)=6x+12 (x+1)2=(8+x)2 8x2+x=0 x2-3x=0 x2+2x=-1 81x2-1=0 x(2x+1)=8x+4 (7x+9)2=(1+x)2 4x2+6x=0 2x2+x=0 x2+4x=-4 36x2-100=0 2x(4x-4)=24x-24 (4x-1)2=(1+x)2 6x2+7x=0 9x2+x=0 x2-4x=-4 9x2-81=0 x(3x-8)=18x-48 (8x+7)2=(1+x)2 9x2-x=0 2x2-3x=0 x2-6x=-9 25x2-36=0 4x(2x-8)=10x-40 (x-4)2=(9+2x)2 5x2-6x=0 8x2+5x=0 x2-18x=-81 49x2-225=0 3x(4x+4)=20x+20 (x-9)2=(9+4x)2 2x2+x=0 6x2+x=0 x2-2x=-1 49x2-25=0 4x(2x+6)=12x+36 (x-1)2=(2-x)2 7x2+7x=0 7x2-5x=0 x2-6x=-9 64x2-256=0 x(3x-9)=9x-27 (3x-4)2=(8-x)2 2x2+3x=0 5x2+5x=0 x2-18x=-81 36x2-1=0 x(4x+9)=24x+54 (7x-4)2=(6+x)2 4x2-9x=0 x2+5x=0 x2-20x=-100 49x2-100=0 x(2x+4)=8x+16 (4x+9)2=(7+9x)2 8x2+5x=0 7x2+x=0 x2-10x=-25 25x2-1=0 x(3x-4)=18x-24 (x+6)2=(10+7x)2 4x2-3x=0 7x2+4x=0 x2-20x=-100 49x2-169=0 3x(4x+6)=16x+24 (9x-4)2=(2-8x)2 x2-8x=0 8x2+3x=0 x2+20x=-100 81x2-324=0 2x(4x+1)=24x+6 (2x-2)2=(4-6x)2 x2+9x=0 7x2-3x=0 x2-16x=-64 25x2-4=0 4x(4x-9)=16x-36 (x+5)2=(2+x)2 4x2-6x=0 9x2-2x=0 x2-18x=-81 25x2-289=0 x(4x-7)=16x-28 (x-7)2=(8-8x)2 4x2+7x=0 3x2+3x=0 x2-20x=-100 25x2-100=0 4x(4x+7)=12x+21 (7x-6)2=(4+x)2 5x2+2x=0 x2+5x=0 x2-12x=-36 64x2-81=0 x(2x-6)=8x-24 (5x-4)2=(5+x)2 9x2-9x=0 3x2-2x=0 x2-10x=-25 36x2-9=0 x(3x-7)=9x-21 (2x-1)2=(10+x)2 7x2-9x=0 9x2+2x=0 x2+4x=-4 9x2-25=0 x(2x+5)=10x+25 (4x-8)2=(9+4x)2 8x2-5x=0 7x2-3x=0 x2-14x=-49 16x2-169=0 4x(4x-2)=20x-10 (x+7)2=(8+3x)2 5x2-5x=0 5x2-x=0 x2-2x=-1 100x2-4=0 4x(2x-3)=10x-15 (x-3)2=(10-9x)2 x2+2x=0 4x2+2x=0 x2+14x=-49 36x2-4=0 4x(2x+8)=6x+24 (x-4)2=(5+2x)2 3x2+2x=0 5x2+2x=0 x2-8x=-16 81x2-4=0 2x(3x-1)=18x-6 (x-3)2=(1+x)2 7x2-x=0 9x2-2x=0 x2+20x=-100 100x2-25=0 4x(4x+1)=12x+3 (x-6)2=(2+x)2 2x2+3x=0 8x2-x=0 x2-8x=-16 16x2-64=0 x(3x-1)=6x-2 (2x+7)2=(1-8x)2 2x2-x=0 x2+5x=0 x2-4x=-4 36x2-49=0 x(2x+7)=6x+21 (x+9)2=(4+6x)2 x2+8x=0 7x2+2x=0 x2-6x=-9 81x2-25=0 2x(3x+5)=12x+20 (x-7)2=(7-x)2 7x2-8x=0 x2-2x=0 x2-14x=-49 4x2-36=0 2x(3x-4)=18x-24 (6x+6)2=(8-5x)2 5x2-8x=0 6x2-3x=0 x2-12x=-36 9x2-64=0 x(3x-7)=9x-21 (7x+6)2=(10+3x)2 4x2-x=0 x2-2x=0 x2+18x=-81 4x2-16=0 x(2x+8)=4x+16 (3x-8)2=(3-5x)2 x2-7x=0 4x2-x=0 x2-16x=-64 36x2-400=0 x(4x+5)=8x+10 (3x+8)2=(2+x)2 7x2-7x=0 8x2+4x=0 x2+8x=-16 36x2-81=0 3x(3x-4)=12x-16 (2x-9)2=(8-8x)2 7x2+6x=0 x2-3x=0 x2+14x=-49 49x2-16=0 4x(2x+6)=4x+12 (8x+3)2=(4-4x)2 3x2+9x=0 x2-5x=0 x2+18x=-81 81x2-4=0 4x(4x-5)=24x-30 (x+5)2=(4+x)2 7x2-7x=0 2x2-x=0 x2-2x=-1 100x2-100=0 x(2x+9)=4x+18 (9x+2)2=(8-x)2 x2+6x=0 x2+4x=0 x2+6x=-9 49x2-16=0 x(2x-3)=12x-18 (x-8)2=(3+x)2 8x2-3x=0 5x2-5x=0 x2+20x=-100 81x2-9=0 2x(4x+7)=20x+35 (x-2)2=(3-2x)2 6x2-7x=0 3x2+x=0 x2-2x=-1 64x2-289=0 x(4x-7)=8x-14 (2x+5)2=(7+x)2 2x2-6x=0 x2-4x=0 x2-2x=-1 64x2-49=0 x(2x+7)=6x+21 (x-9)2=(9-6x)2 4x2-5x=0 4x2+x=0 x2-14x=-49 16x2-169=0 3x(2x+8)=10x+40 (x+7)2=(9+2x)2 8x2+3x=0 x2-5x=0 x2+8x=-16 49x2-36=0 x(4x-6)=8x-12 (x+7)2=(2-x)2 x2+2x=0 x2-3x=0 x2-6x=-9 4x2-25=0 x(4x-8)=12x-24 (x+3)2=(7-6x)2 4x2-x=0 x2-4x=0 x2-14x=-49 81x2-16=0 3x(3x+1)=9x+3 (6x-1)2=(4-x)2 7x2+x=0 6x2+3x=0 x2-16x=-64 81x2-121=0 3x(3x+3)=18x+18 (x-9)2=(2-8x)2 x2-2x=0 x2-x=0 x2+20x=-100 64x2-64=0 4x(2x+3)=10x+15 (x+7)2=(5-x)2 4x2-4x=0 9x2-5x=0 x2+6x=-9 36x2-121=0 4x(3x+6)=12x+24 (x-1)2=(7-7x)2 8x2-x=0 7x2+5x=0 x2+12x=-36 9x2-49=0 x(4x+4)=20x+20 (6x+6)2=(4+x)2 9x2+6x=0 4x2-x=0 x2+2x=-1 16x2-289=0 x(4x+3)=8x+6 (x+9)2=(1-x)2 7x2-x=0 2x2+x=0 x2-4x=-4 36x2-4=0 3x(3x+2)=9x+6 (7x-4)2=(3-5x)2 2x2-x=0 2x2+5x=0 x2-6x=-9 9x2-9=0 4x(4x-9)=8x-18 (x+7)2=(7+x)2 x2-6x=0 5x2-x=0 x2-18x=-81 36x2-25=0 2x(3x+9)=18x+54 (x+1)2=(3-x)2 x2-3x=0 x2-x=0 x2+18x=-81 100x2-49=0 x(2x-2)=8x-8 (4x-2)2=(10+5x)2 3x2+2x=0 4x2-x=0 x2-4x=-4 100x2-196=0 x(2x-6)=6x-18 (8x+6)2=(3-x)2 7x2-6x=0 8x2+2x=0 x2-20x=-100 16x2-196=0 4x(3x+3)=18x+18 (x+2)2=(10-x)2 5x2-9x=0 5x2-2x=0 x2-8x=-16 81x2-100=0 2x(3x+4)=12x+16 (3x-5)2=(4+x)2 5x2+3x=0 8x2-x=0 x2-8x=-16 36x2-64=0 x(2x-6)=10x-30 (5x+8)2=(4+x)2 x2+3x=0 x2+3x=0 x2-2x=-1 81x2-16=0 2x(3x+9)=6x+18 (x-5)2=(2-x)2 2x2-3x=0 6x2-x=0 x2-16x=-64 49x2-256=0 3x(3x+5)=6x+10 (x-7)2=(7-x)2 2x2-6x=0 7x2+2x=0 x2-2x=-1 81x2-1=0 4x(2x+2)=8x+8 (x-8)2=(4-5x)2 8x2+x=0 4x2-3x=0 x2+4x=-4 25x2-361=0 2x(2x-7)=6x-21 (5x-9)2=(8+x)2 x2+2x=0 x2+5x=0 x2-10x=-25 36x2-25=0 3x(3x+2)=9x+6 (x-4)2=(2+5x)2 3x2-6x=0 3x2-2x=0 x2-20x=-100 49x2-144=0 4x(3x-1)=18x-6 (6x-8)2=(2-3x)2 3x2-3x=0 7x2-5x=0 x2-18x=-81 81x2-25=0 x(2x+6)=4x+12 (2x+1)2=(9+6x)2 3x2+2x=0 4x2-x=0 x2-18x=-81 9x2-289=0
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