人教版初中九年级数学上册公式法解一元二次方程综合练习题50.docx
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人教版初中九年级数学上册公式法解一元二次方程综合练习题50.docx
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人教版初中九年级数学上册公式法解一元二次方程综合练习题50
x2+2x+8=02x2+2
x+3=0
4x2-8x+7=0x2-10x=19
3x2-2x=x-2x2+9x-7=0
3x2-10x+5=06x2+7x=0
x2-7x+7=7x-5x(2x+1)=6-9x
x2+10x+7=04x2+3
x+2=0
4x2-6x+2=0x2-10x=18
4x2-10x=x-7x2-9x+4=0
2x2-4x-8=04x2+9x=0
x2+2x-3=6x+2x(2x+5)=6-3x
x2-10x+3=02x2-3
x-6=0
4x2-9x-7=0x2-8x=8
2x2+3x=x+3x2-10x-8=0
3x2-4x+3=04x2-2x=0
x2-9x+1=5x-5x(3x+2)=4-7x
x2-7x+4=02x2-3
x+6=0
4x2+6x+6=0x2+5x=14
3x2-9x=x-2x2-9x+5=0
4x2-6x-1=04x2-4x=0
x2+9x-7=2x-1x(2x-4)=1+2x
x2+8x+1=03x2+4
x-7=0
3x2-7x+1=0x2+2x=15
2x2+7x=x+8x2-4x+9=0
3x2+10x+6=04x2+5x=0
x2+5x+6=6x+3x(3x-1)=4+4x
x2+9x+5=03x2-2
x+9=0
4x2+2x+6=0x2+7x=7
4x2+4x=x+6x2-4x+4=0
3x2+8x-6=09x2-3x=0
x2+5x+10=4x-10x(3x-3)=2-3x
x2+2x+4=03x2-2
x+9=0
2x2+9x+8=0x2-4x=13
3x2-8x=x-1x2-4x+7=0
4x2-3x+3=05x2-2x=0
x2+2x+2=5x-4x(2x-3)=6+3x
x2+7x+6=03x2+4
x+10=0
3x2-4x-7=0x2+10x=20
4x2-2x=x-1x2+5x+1=0
2x2-10x-10=03x2+5x=0
x2-5x+2=2x-3x(4x+2)=3-4x
x2-5x+2=03x2+3
x-3=0
2x2+10x-3=0x2-9x=13
4x2-2x=x+2x2-6x-7=0
2x2-7x-5=08x2-2x=0
x2-5x-3=4x-10x(3x-4)=4-4x
x2-6x+2=04x2+4
x-2=0
2x2-6x-5=0x2+6x=2
2x2+8x=x+5x2+7x-5=0
3x2+3x-1=02x2-8x=0
x2-10x+2=2x-5x(2x-2)=9-6x
x2-10x-9=02x2+3
x-7=0
4x2-2x+6=0x2+7x=18
2x2-4x=x-6x2-4x+8=0
2x2+4x-2=05x2+3x=0
x2-10x+6=9x+1x(4x-5)=3-5x
x2-4x-10=04x2-4
x+5=0
2x2+10x-1=0x2+10x=3
2x2+4x=x+8x2+9x+1=0
4x2-10x-8=07x2+6x=0
x2+5x+7=5x+7x(3x-2)=1+3x
x2-4x+5=04x2+3
x+1=0
4x2-8x+2=0x2-4x=18
4x2+8x=x+7x2-7x+5=0
2x2-3x+2=04x2+8x=0
x2-2x-1=9x-7x(3x-1)=3+4x
x2-6x+5=03x2+2
x+8=0
2x2-4x+6=0x2-3x=12
3x2-4x=x+7x2-2x+3=0
3x2+7x-10=06x2+2x=0
x2-7x-2=5x+1x(2x-2)=2-3x
x2+2x+3=04x2+2
x+9=0
3x2-5x+10=0x2+10x=8
2x2-9x=x+5x2-4x-9=0
3x2-3x+10=04x2+2x=0
x2-10x-3=9x+10x(3x+1)=5+2x
x2+2x+10=02x2+3
x+5=0
4x2+5x-2=0x2+9x=3
4x2+4x=x+3x2-2x+3=0
2x2-6x+3=03x2+5x=0
x2+8x+3=7x-9x(4x-2)=3-6x
x2-8x+1=03x2-3
x-9=0
2x2-3x-6=0x2-2x=12
4x2+8x=x-10x2+10x-6=0
2x2+6x+6=02x2+5x=0
x2-6x-7=2x+7x(4x+2)=4+7x
x2+3x+8=03x2-3
x-5=0
3x2+7x+4=0x2+6x=7
3x2+10x=x-3x2+8x+9=0
3x2-6x+10=02x2-2x=0
x2-2x+3=8x-3x(4x+3)=5+3x
x2-6x-5=03x2-4
x+6=0
3x2-4x-1=0x2-4x=20
4x2+5x=x-10x2+4x+10=0
2x2+8x+5=02x2-4x=0
x2+8x-9=5x+8x(4x+4)=1+5x
x2+6x+8=03x2-3
x+7=0
3x2+2x-9=0x2+3x=16
2x2+7x=x-10x2-9x-9=0
4x2+9x+2=02x2-3x=0
x2+6x+7=7x+1x(3x-4)=8-9x
x2-9x-9=04x2-4
x+9=0
3x2-7x+5=0x2-9x=20
3x2-9x=x+3x2-4x-6=0
3x2-8x-7=04x2+2x=0
x2+4x-10=3x+5x(3x+4)=9-3x
x2+3x+10=02x2-3
x+7=0
3x2-2x+1=0x2+4x=12
2x2+4x=x+5x2-7x+9=0
3x2+6x+3=04x2-3x=0
x2+4x+2=2x-8x(4x+1)=7-6x
x2-3x+6=03x2+3
x-4=0
2x2-4x-1=0x2-6x=18
2x2+5x=x+3x2+2x+7=0
2x2+5x+8=05x2-3x=0
x2-9x-10=3x-2x(3x+1)=2+9x
x2-9x+7=03x2+4
x-1=0
3x2+2x-5=0x2-5x=8
3x2-8x=x+4x2-3x+8=0
2x2-6x+8=02x2+4x=0
x2+7x+4=5x+1x(2x+3)=4+6x
x2+10x+5=04x2-2
x+10=0
4x2+5x-7=0x2-4x=18
2x2+7x=x+8x2+10x+6=0
2x2-7x-1=05x2+5x=0
x2+5x-6=6x+7x(2x+5)=4-3x
x2+5x+3=03x2-4
x+4=0
2x2-2x+1=0x2+5x=17
2x2+9x=x+6x2-8x-4=0
3x2-3x-4=08x2-7x=0
x2-5x-6=4x+2x(2x+5)=7-3x
x2+8x-5=04x2-4
x+7=0
3x2-8x-6=0x2-10x=7
4x2-10x=x+5x2-9x-9=0
3x2+9x+2=02x2+7x=0
x2-6x-1=9x-4x(3x-4)=7-2x
x2-2x+4=04x2-4
x-3=0
2x2-10x-1=0x2+5x=1
3x2-8x=x+10x2+6x-7=0
2x2+7x+3=06x2-9x=0
x2+2x+4=9x+4x(2x-4)=8-5x
x2+3x+9=04x2+4
x-4=0
2x2+2x-10=0x2+2x=18
3x2+6x=x-1x2+3x-8=0
3x2-10x-6=04x2+4x=0
x2+10x+9=6x-8x(4x-3)=4-6x
x2+2x+5=02x2+2
x-10=0
2x2+7x+6=0x2+5x=20
4x2-7x=x+4x2-7x+2=0
2x2+2x+10=04x2+3x=0
x2+5x+1=2x-1x(4x+3)=7+6x
x2+4x-5=03x2-2
x-1=0
3x2-2x-5=0x2-6x=14
3x2-9x=x-4x2-5x+1=0
3x2-3x+7=03x2-8x=0
x2+5x-3=9x+9x(4x+3)=7+3x
x2-9x-1=02x2+2
x+7=0
2x2-9x-1=0x2+10x=16
4x2+9x=x-8x2-3x-9=0
4x2+10x+2=04x2-10x=0
x2+2x+6=2x+4x(3x+4)=9+4x
x2+9x+5=03x2-4
x+8=0
3x2+6x+5=0x2-2x=13
2x2-8x=x-7x2-6x+5=0
3x2+10x-6=04x2+10x=0
x2+5x+3=8x+7x(4x+5)=6+9x
x2-7x-7=04x2-3
x-9=0
3x2-7x+10=0x2+7x=13
3x2+3x=x-1x2-7x+3=0
2x2+8x+6=04x2-9x=0
x2+8x-8=3x-6x(4x+1)=8-6x
x2+9x+7=02x2+4
x-5=0
4x2-3x-7=0x2+6x=12
3x2+7x=x-6x2+3x+6=0
2x2-4x-10=09x2-4x=0
x2+8x+6=7x-2x(2x+1)=7+9x
x2-3x-10=03x2-2
x+4=0
3x2-4x-6=0x2+9x=12
4x2+4x=x-1x2-4x+5=0
3x2-5x+3=09x2-5x=0
x2-9x-5=4x-5x(3x+4)=3+7x
x2-10x+5=03x2+2
x-8=0
2x2-4x+1=0x2+4x=19
3x2+4x=x-2x2+2x+8=0
2x2-9x-2=08x2+9x=0
x2+7x+2=9x-2x(3x-3)=9-9x
x2+4x+2=03x2+3
x+3=0
3x2+5x+8=0x2-4x=2
3x2-4x=x+10x2-6x-10=0
2x2-5x-3=04x2-6x=0
x2-10x-9=3x+3x(4x-5)=8+8x
x2-3x-3=04x2-4
x-6=0
2x2-9x-7=0x2+6x=8
2x2+2x=x+5x2+2x-2=0
2x2-3x-6=03x2+8x=0
x2-3x-8=5x-7x(3x-1)=2-5x
x2+4x-3=02x2+4
x+9=0
4x2-3x-9=0x2-8x=3
2x2+4x=x+10x2-5x-3=0
2x2-7x-8=03x2-2x=0
x2+9x+9=3x-6x(2x+4)=2-2x
x2-9x-4=02x2-4
x-8=0
4x2-5x-4=0x2-9x=19
4x2+6x=x-9x2+4x-1=0
2x2+10x-2=03x2-5x=0
x2+10x-1=3x-4x(4x-1)=9-7x
x2-2x+6=02x2+2
x-8=0
3x2-2x+10=0x2+10x=11
4x2-8x=x-5x2+8x+1=0
3x2-3x+4=05x2+9x=0
x2+9x-5=5x+9x(4x-1)=9+9x
x2-8x+5=03x2-3
x+7=0
2x2-9x-10=0x2+5x=3
3x2-6x=x+6x2-2x-7=0
3x2+10x-8=09x2-10x=0
x2-9x+8=4x-7x(3x+3)=2-3x
x2-4x+4=04x2-4
x+3=0
2x2-9x+5=0x2-4x=12
2x2-2x=x+8x2+8x+7=0
4x2+6x-8=07x2-4x=0
x2+9x-3=2x-6x(2x-1)=4+5x
x2-8x-3=02x2+4
x-2=0
2x2+3x+10=0x2+9x=5
2x2+5x=x+6x2-5x-7=0
2x2+5x-6=07x2-8x=0
x2-5x+10=9x+7x(2x+4)=2+4x
x2-2x-6=03x2-2
x+6=0
2x2-2x-6=0x2-9x=15
3x2-4x=x-3x2+6x+5=0
3x2-5x-1=09x2+5x=0
x2+10x-4=8x+9x(2x+3)=3-5x
x2-7x+5=04x2-2
x-10=0
3x2+3x-1=0x2+5x=6
4x2-5x=x-1x2-8x+4=0
3x2+5x-8=06x2+6x=0
x2-6x+4=2x+7x(4x+5)=7-4x
x2+3x+6=02x2-4
x+7=0
2x2-2x-8=0x2+7x=5
4x2+2x=x+7x2+4x+1=0
4x2-5x+9=03x2+7x=0
x2+7x+7=7x-6x(2x+4)=5-9x
x2+7x+1=02x2+3
x+8=0
4x2+9x-8=0x2-7x=12
4x2+7x=x-1x2-4x+4=0
3x2+8x-6=02x2-3x=0
x2-3x-9=3x+2x(3x+3)=3+8x
x2-3x-1=04x2+4
x+4=0
4x2+5x-3=0x2-5x=17
3x2+10x=x-4x2-2x+8=0
4x2-3x+6=02x2+3x=0
x2-4x-1=2x+7x(3x+3)=3-2x
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