人教版初三数学上册一元二次方程专项练习题139文档格式.docx
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3x2-6=0x2-3=1(x+5)2-1=0
(x-3)2-3=0x2-8x+16=6x2-2=4
x2+2=4xx2+6x=42(2x-3)(x+2)=0
7x(x-4)=19x(x+3)=03x(x-5)=3x+3
(9x+9)(x+4)=x(2x-2)8x2+7=5x7x(x+5)=26
x2-2=07x2-3=8(x-4)2-2=0
(x+2)2-8=0x2+10x+25=9x2+7=7
x2+4=8x8x2+1x=36(5x-2)(x-8)=0
3x(x-6)=28x(x+5)=0x(x-8)=4x-1
(8x-9)(x+5)=x(8x+5)x2+4=8x4x(x+1)=2
5x2-8=08x2-8=7(x-6)2-4=0
6(x+6)2-7=0x2-8x+16=7x2-1=7
x2-9=4x7x2+2x=91(2x+8)(x+8)=0
3x(x+7)=11x(x-1)=03x(x-4)=2x-1
(7x-7)(x-7)=x(4x-4)x2+5=9xx(x+7)=11
x2-8=03x2-1=6(x+9)2-5=0
2(x-2)2-4=0x2-2x+1=48x2-3=7
4x2-9=3x4x2-2x=95(7x+8)(x-6)=0
9x(x+1)=8x(x+8)=0x(x-7)=8x+2
(6x-8)(x-1)=x(7x-1)7x2-2=5x3x(x+8)=27
x2-2=0x2-2=9(x-1)2-7=0
7(x+4)2-3=0x2-18x+81=5x2+3=5
x2-7=6x4x2-8x=56(2x-1)(x-1)=0
x(x+5)=25x(x+5)=07x(x+4)=3x-5
(9x-4)(x+4)=x(8x+4)9x2+9=7xx(x+6)=9
x2-5=0x2-9=6(x-4)2-3=0
5(x-3)2-6=0x2-18x+81=8x2+8=9
6x2-2=3x9x2+7x=8(9x-6)(x+1)=0
x(x-2)=13x(x-7)=05x(x-8)=2x-5
(8x-7)(x+9)=x(7x-6)5x2-8=3x9x(x-4)=16
x2-8=06x2-2=5(x-4)2-7=0
2(x+5)2-9=0x2-16x+64=86x2-8=3
x2+1=5xx2-3x=46(5x+4)(x-3)=0
7x(x+1)=6x(x+7)=0x(x+1)=9x-5
(2x-7)(x-1)=x(9x-7)9x2-5=9xx(x-1)=16
x2-1=0x2-1=2(x-3)2-9=0
(x+9)2-3=0x2-12x+36=8x2-9=9
5x2+3=2x4x2-2x=58(8x+3)(x+5)=0
2x(x+8)=19x(x-7)=0x(x+3)=7x-7
(8x-4)(x-6)=x(5x-8)x2+4=7xx(x-9)=15
x2-7=03x2-1=3(x+8)2-2=0
(x-1)2-5=0x2+8x+16=73x2+8=3
4x2+6=5xx2-3x=30(2x+5)(x-4)=0
7x(x-8)=8x(x+4)=0x(x-6)=5x+3
(7x-7)(x-7)=x(6x+6)x2+8=5xx(x+6)=5
7x2-1=06x2-1=2(x-6)2-2=0
9(x-5)2-5=0x2-14x+49=88x2+8=9
x2+2=9x6x2-6x=72(8x-9)(x+2)=0
9x(x+2)=9x(x-4)=05x(x+8)=5x-4
(5x-1)(x-7)=x(3x-7)x2+6=2xx(x+7)=27
x2-1=09x2-9=9(x+2)2-5=0
(x+5)2-8=0x2-8x+16=8x2-2=9
x2+2=8x5x2+7x=68(3x-1)(x+5)=0
x(x-4)=45x(x-7)=0x(x+8)=7x+5
(5x-8)(x+6)=x(6x+1)4x2-7=2x4x(x+2)=26
x2-3=0x2-4=2(x-6)2-5=0
5(x-7)2-9=0x2+6x+9=3x2+9=6
x2+5=6xx2+3x=10(8x+9)(x+2)=0
9x(x-4)=24x(x+3)=0x(x+3)=7x-1
(5x+3)(x-8)=x(8x-6)5x2+3=3xx(x+3)=4
2x2-5=0x2-9=4(x+8)2-8=0
(x-3)2-7=0x2+4x+4=59x2+1=9
x2+9=4xx2+9x=68(7x-9)(x+4)=0
6x(x+8)=215x(x-8)=03x(x+3)=5x-2
(8x+5)(x+6)=x(6x+8)5x2+9=9xx(x+7)=6
5x2-6=0x2-3=7(x-3)2-7=0
2(x-4)2-1=0x2+6x+9=85x2-3=5
x2-2=3xx2-8x=98(5x-8)(x-8)=0
2x(x-1)=29x(x-6)=0x(x+1)=4x+3
(3x+1)(x-2)=x(6x+9)x2+4=6xx(x+9)=19
x2-4=06x2-5=7(x-9)2-4=0
9(x+3)2-1=0x2-16x+64=55x2+7=4
x2+2=8xx2-8x=70(8x-3)(x+3)=0
7x(x-4)=16x(x-9)=09x(x+1)=9x-8
(2x+3)(x+2)=x(9x-8)7x2-4=4x2x(x+8)=19
3x2-7=08x2-7=9(x-4)2-7=0
7(x-9)2-5=0x2-8x+16=87x2-9=8
2x2+8=4x2x2-9x=56(9x-7)(x-5)=0
6x(x-4)=159x(x+7)=0x(x+6)=3x+9
(6x+9)(x+6)=x(7x+8)x2-2=2xx(x+3)=20
2x2-3=02x2-8=8(x-2)2-2=0
5(x-1)2-4=0x2-10x+25=9x2-8=9
3x2-4=2xx2-5x=41(3x+7)(x-1)=0
3x(x-9)=168x(x-7)=05x(x+6)=5x-4
(8x-8)(x-5)=x(4x+6)x2+5=2xx(x+4)=30
x2-5=0x2-4=3(x+1)2-6=0
7(x-6)2-5=0x2-16x+64=1x2+5=2
8x2-5=3xx2+4x=87(6x+6)(x+3)=0
9x(x-3)=16x(x-2)=02x(x-3)=3x+2
(6x+9)(x+6)=x(9x+8)8x2+3=4x8x(x+7)=6
x2-3=0x2-5=5(x-7)2-2=0
(x+4)2-8=0x2-8x+16=1x2+1=5
x2+6=5x8x2+8x=84(7x-7)(x+6)=0
3x(x-3)=36x(x+7)=0x(x+5)=2x+1
(8x-5)(x+7)=x(8x+6)4x2-2=5x8x(x-3)=5
7x2-7=0x2-3=2(x+5)2-3=0
5(x+3)2-9=0x2-6x+9=38x2+1=6
6x2-1=7xx2+5x=19(8x-6)(x+3)=0
4x(x-4)=29x(x-4)=07x(x+4)=9x-8
(6x-4)(x+8)=x(9x-6)3x2+6=4xx(x-5)=14
2x2-2=0x2-9=0(x-8)2-5=0
8(x-6)2-7=0x2+12x+36=6x2-2=6
9x2-2=6x6x2-9x=23(8x-9)(x+3)=0
8x(x+5)=64x(x-9)=02x(x+2)=7x+8
(5x-9)(x-1)=x(3x-5)x2+1=7x9x(x+2)=13
x2-1=0x2-3=1(x-7)2-4=0
(x-2)2-9=0x2-2x+1=42x2-5=8
9x2-5=6x2x2+6x=42(4x+9)(x-4)=0
3x(x+3)=7x(x+1)=0x(x+7)=7x-1
(9x+7)(x-9)=x(6x-1)9x2-9=3xx(x+7)=16
9x2-1=0x2-2=1(x+8)2-2=0
(x+9)2-4=0x2+8x+16=9x2+9=4
5x2+9=7x3x2+8x=38(6x-3)(x-9)=0
6x(x-5)=9x(x-3)=0x(x-5)=2x+2
(6x-4)(x+5)=x(2x-9)2x2-1=3x8x(x-8)=7
5x2-5=0x2-5=2(x-7)2-9=0
8(x-3)2-6=0x2+16x+64=67x2+3=7
x2+7=2xx2+7x=45(7x-6)(x-5)=0
4x(x+9)=12x(x+2)=06x(x+3)=8x-9
(8x-7)(x+9)=x(3x-5)3x2-2=5x5x(x-6)=4
8x2-4=03x2-9=3(x+7)2-1=0
2(x-1)2-3=0x2-10x+25=9x2+8=9
4x2-6=2x6x2+9x=90(4x-4)(x+6)=0
x(x-1)=4x(x+6)=0x(x-5)=7x+1
(2x-7)(x+7)=x(8x+7)x2-4=6xx(x+5)=3
x2-1=0x2-8=5(x+9)2-8=0
6(x+2)2-9=0x2-10x+25=53x2+3=5
3x2+8=8x4x2+3x=87(4x-2)(x-8)=0
2x(x-4)=7x(x-5)=0x(x-9)=2x-9
(6x-5)(x+5)=x(5x-6)x2-3=4xx(x-9)=2
x2-1=08x2-2=9(x-4)2-1=0
6(x+5)2-9=0x2+4x+4=5x2+5=9
5x2-8=4xx2-4x=33(2x+1)(x-3)=0
7x(x+8)=209x(x+4)=0x(x-2)=6x+9
(8x-9)(x+2)=x(6x+7)3x2-7=2xx(x+7)=25
x2-6=0x2-2=7(x-2)2-4=0
7(x-7)2-9=0x2-16x+64=73x2+4=4
x2-9=4xx2-2x=43(5x+6)(x+2)=0
x(x-5)=4x(x+2)=02x(x-6)=7x+8
(2x-7)(x+9)=x(9x-5)6x2-3=3x6x(x+3)=9
2x2-5=0x2-1=5(x+6)2-9=0
(x+6)2-2=0x2+2x+1=79x2-5=9
2x2-2=7x8x2-9x=58(3x+3)(x+2)=0
x(x+9)=21x(x+1)=0x(x+4)=9x-5
(6x+7)(x-9)=x(6x+5)5x2+3=4xx(x-1)=22
x2-8=0x2-6=8(x+3)2-8=0
(x+3)2-3=0x2-2x+1=75x2-8=2
x2-3=3x2x2+4x=80(6x+7)(x+5)=0
2x(x+4)=25x(x-1)=0x(x+1)=9x+5
(5x+4)(x-9)=x(6x-8)x2+3=6xx(x+1)=27
4x2-4=0x2-1=3(x-1)2-3=0
3(x-2)2-9=0x2+10x+25=5x2+9=5
2x2-8=5xx2+5x=43(5x-6)(x-3)=0
x(x-7)=65x(x-5)=08x(x+7)=3x+9
(5x+4)(x+5)=x(7x-3)6x2+1=2xx(x+4)=17
4x2-3=03x2-1=8(x-6)2-3=0
(x-9)2-8=0x2-6x+9=16x2-7=7
6x2-5=8x2x2-6x=48(3x-1)(x-