人教版初三数学上册一元二次方程专项练习题21Word下载.docx
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x2-9=05x2-3=0(x-7)2-7=0
4(x-3)2-4=0x2+6x+9=39x2-7=6
9x2-1=6xx2-9x=42(6x-7)(x+1)=0
5x(x+9)=193x(x+3)=09x(x-1)=6x+6
(9x+7)(x+4)=x(4x+8)x2+3=8xx(x-7)=26
x2-7=0x2-6=8(x-9)2-1=0
(x-7)2-8=0x2-18x+81=2x2-8=2
4x2+8=7x7x2-2x=82(3x-4)(x+7)=0
x(x+3)=16x(x+4)=0x(x-9)=3x-1
(2x+1)(x+8)=x(6x+2)x2-6=4xx(x-5)=13
x2-6=09x2-5=7(x+8)2-5=0
(x+4)2-3=0x2+12x+36=34x2-8=9
x2+5=5x3x2+3x=12(3x+9)(x-8)=0
x(x-2)=13x(x-6)=08x(x+9)=2x-8
(6x-4)(x+6)=x(3x-1)x2+5=7x9x(x-8)=5
x2-4=07x2-4=3(x+2)2-4=0
(x-5)2-4=0x2-16x+64=4x2+7=2
3x2-8=2xx2-4x=100(8x+2)(x-9)=0
4x(x+2)=87x(x+6)=04x(x-9)=9x-4
(6x-2)(x-9)=x(5x-8)3x2+4=9xx(x-6)=19
x2-8=0x2-3=6(x+4)2-2=0
2(x+3)2-5=0x2+14x+49=97x2+6=4
x2-1=9xx2-8x=11(6x-2)(x-6)=0
8x(x-1)=12x(x+5)=0x(x-8)=2x+3
(9x+6)(x+3)=x(3x-7)2x2+7=3x9x(x-8)=6
9x2-1=0x2-4=3(x-7)2-5=0
3(x-5)2-5=0x2+16x+64=6x2+5=5
x2+7=3x7x2+8x=86(6x+2)(x+2)=0
7x(x+9)=15x(x+9)=05x(x+3)=2x-1
(6x+1)(x-2)=x(8x-3)2x2+4=7xx(x-1)=9
x2-3=04x2-3=9(x-9)2-8=0
6(x+1)2-8=0x2-18x+81=14x2-7=2
4x2+5=7xx2-8x=15(8x-4)(x+1)=0
x(x+2)=109x(x-1)=07x(x-1)=6x+9
(7x-6)(x-4)=x(8x-2)4x2-5=5x9x(x-8)=23
x2-7=0x2-6=1(x+6)2-9=0
(x-4)2-6=0x2+14x+49=9x2-6=7
x2-9=3xx2+3x=16(3x+5)(x-9)=0
6x(x-1)=178x(x-2)=07x(x-7)=9x-6
(2x-1)(x+2)=x(8x-3)3x2-4=7x6x(x+2)=12
3x2-2=0x2-5=1(x+5)2-6=0
(x+5)2-4=0x2+6x+9=1x2-6=6
7x2+8=5x7x2-9x=16(3x+9)(x-7)=0
x(x-6)=26x(x+7)=0x(x+3)=5x+2
(9x+8)(x+3)=x(3x-2)2x2-7=8x2x(x+3)=17
x2-8=0x2-7=4(x+7)2-6=0
(x+1)2-5=0x2+6x+9=4x2+2=7
8x2+9=8x6x2-2x=39(6x+7)(x+8)=0
2x(x-1)=9x(x+7)=05x(x-4)=5x-2
(4x-8)(x+8)=x(2x+8)x2-8=4x6x(x-9)=12
9x2-1=0x2-1=0(x+6)2-5=0
5(x+8)2-5=0x2-6x+9=3x2-8=6
3x2-5=7x7x2+9x=61(8x+7)(x+3)=0
x(x-1)=28x(x-5)=08x(x-5)=2x+5
(6x-9)(x-8)=x(6x-6)x2-9=8x8x(x-1)=27
7x2-3=0x2-2=3(x+4)2-4=0
6(x-6)2-3=0x2+12x+36=9x2-4=6
x2-3=3x8x2-2x=40(7x-2)(x-6)=0
x(x-1)=17x(x-5)=0x(x+1)=2x-2
(6x-1)(x-9)=x(9x-2)7x2+4=8xx(x-5)=26
5x2-5=06x2-4=2(x+4)2-5=0
5(x+3)2-6=0x2-16x+64=7x2-6=6
x2+7=2x7x2+5x=47(2x+3)(x-2)=0
5x(x+9)=237x(x-5)=09x(x+5)=3x+9
(6x-7)(x+8)=x(3x-5)x2+9=5xx(x+1)=11
x2-4=0x2-9=8(x-2)2-1=0
2(x-6)2-8=0x2-12x+36=3x2-5=6
6x2+5=7xx2+4x=10(7x-4)(x+7)=0
x(x+6)=267x(x+6)=03x(x-6)=4x+2
(7x-5)(x-7)=x(8x+3)x2-4=2x8x(x+5)=2
x2-2=05x2-8=3(x-8)2-9=0
3(x-5)2-1=0x2+18x+81=38x2-1=2
x2-9=6x7x2+3x=21(4x-2)(x-6)=0
x(x-2)=23x(x+8)=0x(x+8)=6x-2
(6x-1)(x+2)=x(6x-7)x2+8=9x5x(x-8)=29
x2-2=06x2-2=7(x-9)2-3=0
2(x+2)2-2=0x2+14x+49=8x2-7=5
x2+7=3x4x2-8x=94(6x+8)(x-9)=0
x(x-5)=276x(x+4)=09x(x-3)=5x-3
(3x-3)(x-6)=x(6x+9)x2+3=2xx(x-5)=10
4x2-1=0x2-8=9(x-8)2-9=0
(x+5)2-8=0x2-14x+49=4x2-7=4
9x2+8=3xx2-7x=97(3x-5)(x+7)=0
2x(x-4)=30x(x-9)=07x(x+7)=5x+2
(2x-9)(x+1)=x(7x-4)x2-2=4xx(x+9)=17
2x2-9=0x2-4=9(x+2)2-9=0
6(x+7)2-7=0x2+16x+64=2x2-9=8
x2-9=4x8x2+6x=80(4x-4)(x-6)=0
6x(x+7)=23x(x+1)=03x(x-2)=5x+4
(6x+9)(x-1)=x(7x+2)x2+8=4xx(x+2)=5
2x2-5=05x2-1=2(x+3)2-1=0
2(x-2)2-9=0x2-10x+25=7x2+2=9
3x2+5=3x4x2-2x=27(7x+4)(x-1)=0
x(x+2)=66x(x+6)=0x(x+1)=7x-2
(6x+1)(x-6)=x(2x+5)x2+4=8x8x(x-6)=19
7x2-4=02x2-5=2(x+7)2-7=0
6(x+8)2-6=0x2+10x+25=96x2+7=4
x2+7=3x4x2-9x=63(3x+1)(x+1)=0
7x(x+2)=28x(x-3)=0x(x-3)=4x+3
(7x-7)(x-2)=x(8x-3)2x2-1=9x7x(x-4)=13
x2-3=08x2-3=0(x-5)2-1=0
(x+7)2-7=0x2-10x+25=5x2+2=2
x2-1=8x9x2+2x=43(5x+2)(x+6)=0
x(x-1)=83x(x+7)=0x(x+6)=4x+7
(8x+7)(x-2)=x(4x-3)8x2-4=5x5x(x+8)=14
8x2-4=08x2-8=5(x-2)2-7=0
(x+6)2-6=0x2+8x+16=5x2+3=2
4x2+4=2xx2+9x=64(4x+6)(x-8)=0
9x(x+4)=7x(x-3)=0x(x+3)=6x+9
(8x+8)(x-4)=x(6x-2)x2-1=9x9x(x-8)=4
3x2-6=0x2-2=4(x+6)2-4=0
5(x+7)2-9=0x2-14x+49=5x2-3=6
x2+7=5xx2-3x=87(8x+4)(x-6)=0
6x(x-2)=296x(x+2)=0x(x+4)=4x+8
(9x-5)(x-1)=x(7x+7)9x2+4=9x5x(x-7)=4
7x2-8=08x2-9=7(x+2)2-9=0
(x+9)2-7=0x2+4x+4=75x2-3=9
2x2-7=8xx2+1x=19(5x+4)(x-5)=0
4x(x-2)=17x(x-8)=0x(x+8)=8x+3
(6x-8)(x-2)=x(6x+4)x2+8=4x3x(x+2)=20
3x2-3=08x2-6=2(x-6)2-9=0
3(x+5)2-5=0x2+12x+36=28x2-3=7
6x2-3=3xx2-9x=53(4x-9)(x+1)=0
9x(x+4)=14x(x-4)=0x(x-4)=5x+1
(4x+8)(x-8)=x(4x-5)4x2-7=7xx(x+6)=28
7x2-9=08x2-3=4(x+9)2-6=0
8(x+5)2-2=0x2-12x+36=68x2+9=2
7x2-2=6xx2-4x=75(6x+1)(x-3)=0
6x(x-2)=19x(x-7)=0x(x+4)=8x-3
(5x+3)(x+2)=x(8x-2)x2+1=9xx(x+5)=24
2x2-2=0x2-6=7(x-4)2-7=0
5(x+2)2-6=0x2+10x+25=64x2+1=5
5x2-1=2x4x2-1x=33(7x-8)(x+2)=0
x(x+8)=172x(x+3)=02x(x+6)=2x-3
(5x-5)(x-8)=x(9x+8)x2+1=8x2x(x+7)=17
5x2-8=0x2-9=3(x+6)2-5=0
(x-1)2-7=0x2+8x+16=3x2-3=5
5x2-2=2x5x2+9x=65(9x+5)(x-7)=0
x(x+3)=215x(x-1)=0x(x-5)=5x+3
(4x-1)(x-8)=x(4x-8)4x2-3=5x8x(x-5)=26
3x2-8=03x2-3=9(x+9)2-6=0
(x+6)2-6=0x2+10x+25=3x2+3=7
3x2+6=7x3x2-6x=41(8x-8)(x-7)=0
3x(x+8)=9x(x-9)=0x(x+9)=9x+9
(3x-2)(x+6)=x(4x+2)8x2-4=7x5x(x-2)=11
x2-3=0x2-7=9(x+8)2-3=0
8(x+8)2-6=0x2+18x+81=3x2+5=5
8x2+7=8x5x2-5x=8(7x+1)(x+4)=0
3x(x-8)=15x(x+6)=02x(x-2)=5x+1
(2x-1)(x-9)=x(7x+3)6x2-5=6x9x(x-1)=13
x2-8=0x2-4=9(x-9)2-8=0
6(x+9)2-1=0x2+6x+9=5x2+1=2
x2-9=8x6x2+6x=79(2x+7)(x+4)=0
x(x-5)=25x(x+6)=08x(x-4)=8x+2
(3x-4)(x-6)=x(5x+5)6x2-9=7x9x(x+7)=21
x2-2=0x2-2=6(x+8)2-6=0
(x-7)2-5=0x2+10x+25=26x2-1=5
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