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55.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55
x2+10x+9=02x2+3
x+2=0
3x2+6x-9=0x2+5x=11
4x2-4x=x-7x2-5x-9=0
3x2-6x+10=08x2-9x=0
x2+10x-1=4x+9x(3x-2)=6+6x
x2+9x+1=04x2+3
x+8=0
4x2-6x-10=0x2+9x=2
2x2-6x=x+3x2-5x-3=0
2x2-8x-8=09x2+9x=0
x2+3x+10=7x+7x(4x+4)=9+7x
x2+3x-5=04x2+2
x-5=0
2x2+3x-9=0x2-2x=8
4x2-9x=x-1x2+4x-2=0
2x2+4x-10=03x2-4x=0
x2+8x+7=8x-5x(2x+2)=4-9x
x2-10x-2=04x2+3
x-9=0
2x2-3x-9=0x2-7x=3
2x2+3x=x+1x2+8x-4=0
4x2-10x+4=03x2+2x=0
x2-2x-4=2x+6x(3x-1)=1-3x
x2-5x+2=03x2-3
x-4=0
2x2-6x-3=0x2+5x=20
4x2-3x=x-7x2+6x-6=0
4x2-2x-10=04x2-4x=0
x2-9x-8=4x+6x(3x-2)=9-9x
x2-9x-2=02x2-4
x-4=0
3x2-6x+1=0x2-2x=13
4x2+10x=x-4x2-8x-2=0
3x2-6x+5=03x2+6x=0
x2-8x-7=2x+8x(4x-5)=2-7x
x2+10x-2=02x2-3
x-4=0
4x2-4x+1=0x2-2x=16
3x2-8x=x+8x2-8x+1=0
3x2-3x+5=06x2+9x=0
x2-3x+5=9x-8x(2x-3)=2-6x
x2+7x-3=02x2+3
x+3=0
4x2-10x-6=0x2-5x=7
2x2-2x=x+3x2-7x+9=0
3x2+3x-3=02x2-3x=0
x2+10x+4=2x-3x(2x-1)=6-2x
x2-6x+10=03x2-4
x-7=0
2x2+7x-6=0x2-8x=3
4x2+4x=x-8x2-8x+1=0
3x2+4x-2=02x2-4x=0
x2-3x-8=2x-5x(2x-3)=8+4x
x2-10x-8=04x2+3
x+2=0
3x2+8x-10=0x2-10x=3
3x2-9x=x-5x2+4x-9=0
3x2-6x-6=03x2+3x=0
x2-7x+1=8x+10x(2x+3)=5-6x
x2+5x-8=04x2+2
x-7=0
4x2-6x-5=0x2-10x=19
2x2+8x=x+2x2-4x-5=0
4x2-9x+6=05x2-6x=0
x2+6x-2=3x-6x(4x-1)=3+5x
x2-7x-4=04x2+4
x-8=0
4x2+9x+3=0x2+7x=15
2x2+3x=x+5x2+10x+5=0
2x2-2x+6=09x2-6x=0
x2-6x+8=6x+8x(3x+5)=4+2x
x2-8x-1=02x2-3
x+5=0
2x2+10x-6=0x2+3x=6
2x2+2x=x-4x2+9x+3=0
2x2-4x-5=07x2-6x=0
x2+7x-6=5x+9x(2x-1)=1+3x
x2-3x+7=02x2+3
x+3=0
3x2+8x-9=0x2+9x=16
3x2-2x=x+3x2+8x-6=0
2x2+6x-8=02x2-3x=0
x2+6x-6=7x+10x(2x+3)=8+5x
x2+6x-7=02x2+4
x+9=0
4x2+9x+7=0x2+4x=18
3x2-6x=x-1x2+9x+7=0
4x2-10x+5=06x2+5x=0
x2-9x-4=5x-1x(3x-4)=9+5x
x2+4x-1=02x2+2
x+6=0
2x2+4x-2=0x2-5x=15
4x2+3x=x-9x2-3x-1=0
4x2+2x+9=06x2-4x=0
x2+7x+10=5x+3x(4x+2)=7-2x
x2-2x-9=04x2-4
x-1=0
3x2+5x+5=0x2+8x=18
3x2+10x=x+10x2+4x+10=0
4x2-2x+1=07x2+7x=0
x2+4x+8=4x+2x(2x-3)=2-7x
x2+8x+7=04x2-2
x-1=0
3x2+6x+6=0x2+8x=6
3x2+7x=x+2x2-5x-6=0
4x2-7x+6=07x2+3x=0
x2+2x+10=9x-9x(4x-4)=9-2x
x2+3x+4=04x2-3
x-2=0
4x2+10x+8=0x2+6x=11
4x2+4x=x+1x2-3x-5=0
3x2-10x+5=08x2-10x=0
x2+3x+9=6x+10x(2x+4)=7+5x
x2+3x+1=02x2+4
x+4=0
2x2+7x-3=0x2-3x=3
3x2+8x=x-8x2-5x+7=0
2x2+7x+9=04x2-8x=0
x2+7x+5=5x-7x(3x-3)=9-2x
x2-10x-4=02x2-3
x+5=0
3x2-4x+1=0x2+4x=6
3x2+7x=x+6x2+2x-8=0
2x2+3x+1=03x2-4x=0
x2+9x+8=4x-2x(3x-3)=1-9x
x2+9x+6=03x2+3
x+4=0
3x2-2x-1=0x2+3x=14
2x2+6x=x-1x2+9x+5=0
2x2-4x-8=05x2+5x=0
x2-4x-3=9x-4x(2x+4)=7+6x
x2+6x-7=04x2+3
x+3=0
4x2+4x-2=0x2+5x=1
3x2+5x=x+7x2-4x+6=0
2x2+2x-1=02x2+8x=0
x2+2x+7=7x-8x(3x-1)=4-6x
x2-10x+6=03x2+2
x-3=0
2x2+5x-9=0x2+2x=12
3x2+3x=x+4x2+10x+1=0
3x2-2x-4=02x2+2x=0
x2-7x+1=9x+9x(2x-3)=5-6x
x2-3x-9=02x2+2
x-6=0
2x2+9x-8=0x2-3x=1
3x2+6x=x+2x2-10x-2=0
4x2+4x+3=08x2+2x=0
x2-7x-5=4x+7x(4x-3)=9+5x
x2+2x-8=04x2+3
x+3=0
4x2-7x-7=0x2+7x=10
3x2-2x=x+7x2+5x+8=0
4x2+6x-5=09x2-8x=0
x2-10x-1=7x+8x(3x-2)=1-2x
x2+8x+6=02x2+4
x+10=0
3x2+2x+9=0x2-6x=14
4x2-2x=x-2x2+8x+1=0
4x2+10x-5=02x2+3x=0
x2+7x+1=3x+1x(4x+4)=6+7x
x2-2x+9=04x2-3
x-2=0
4x2+9x-6=0x2+5x=13
3x2+3x=x-7x2-9x-3=0
4x2-7x-6=05x2+8x=0
x2+2x-8=6x-10x(3x-3)=3-7x
x2-4x+6=02x2-4
x+6=0
2x2-10x-4=0x2+4x=12
4x2-7x=x+4x2+5x+2=0
4x2+6x+10=07x2-5x=0
x2+10x+7=5x+7x(3x-2)=9+6x
x2-9x+2=03x2+3
x-7=0
2x2+2x+8=0x2+7x=4
2x2+8x=x-4x2-6x-6=0
3x2-2x-5=03x2+3x=0
x2+8x-8=4x+9x(3x+5)=4-2x
x2+6x+8=02x2+2
x+4=0
3x2+2x-2=0x2-10x=15
3x2-3x=x+6x2+4x-6=0
3x2+8x-3=09x2-9x=0
x2+4x+9=6x-7x(2x-1)=5-4x
x2+8x-2=02x2+2
x-6=0
2x2-7x+8=0x2+4x=19
3x2-9x=x+8x2-4x-2=0
3x2+3x+10=03x2-7x=0
x2+5x-5=5x+2x(4x-4)=1+5x
x2-6x-6=02x2+3
x+2=0
2x2-2x+5=0x2+9x=17
2x2-2x=x-8x2-8x+9=0
2x2+10x+2=03x2+3x=0
x2+5x-4=5x-1x(4x+2)=5+3x
x2-8x+1=03x2+3
x+4=0
4x2-7x+4=0x2-10x=20
4x2-8x=x+6x2+7x-5=0
2x2+7x+4=03x2+7x=0
x2-2x-6=6x+5x(2x+1)=7+8x
x2-7x+6=03x2-3
x+5=0
2x2+8x-5=0x2-8x=12
4x2-8x=x-6x2-10x+7=0
3x2-2x+3=09x2-3x=0
x2+8x+10=3x-6x(2x-1)=6-7x
x2-7x-10=03x2+3
x+8=0
4x2+8x-9=0x2-6x=11
3x2-10x=x+6x2-7x-3=0
3x2+8x-7=04x2-5x=0
x2-6x-3=9x-1x(2x-4)=4+4x
x2+9x+2=03x2+3
x-7=0
2x2+4x+7=0x2+7x=1
4x2+8x=x+3x2+10x+4=0
2x2-3x-2=02x2-7x=0
x2+3x-3=2x-2x(2x-5)=5+5x
x2-4x+6=03x2+4
x-1=0
4x2-8x-1=0x2-6x=12
3x2+5x=x-10x2+10x-3=0
3x2-7x+9=09x2+8x=0
x2-3x+9=3x+7x(3x+1)=4+7x
x2-9x+10=02x2+4
x+7=0
4x2-3x+5=0x2+2x=15
3x2+3x=x+7x2-3x-9=0
2x2+9x-5=05x2+10x=0
x2-9x+2=7x+7x(3x+4)=5-6x
x2+4x+8=02x2-2
x-3=0
3x2-10x-5=0x2+6x=12
3x2+4x=x-9x2+6x+8=0
2x2+4x-8=04x2+2x=0
x2+2x+6=3x-6x(4x+5)=5+2x
x2+10x-10=02x2-4
x-2=0
3x2+5x+10=0x2+3x=12
4x2+5x=x-10x2-8x+8=0
3x2-3x-3=03x2+5x=0
x2-5x+5=4x+3x(3x+3)=4-6x
x2+6x-10=02x2+3
x-1=0
3x2-6x+6=0x2-10x=6
3x2-2x=x+8x2+4x-9=0
4x2-3x-4=07x2+2x=0
x2+8x+9=9x+1x(4x+4)=1+4x
x2-7x+3=02x2+2
x+7=0
3x2-7x+5=0x2+6x=13
3x2-8x=x-7x2-2x-1=0
2x2-7x-7=05x2+6x=0
x2+4x+4=4x-5x(3x+1)=4-6x
x2-10x-10=04x2-2
x-5=0
4x2+10x-8=0x2-6x=6
3x2-7x=x+7x2+6x-5=0
2x2-5x+1=06x2-8x=0
x2+6x-10=3x-3x(2x-5)=4-5x
x2+2x-5=03x2+3
x+1=0
4x2-4x-3=0x2-7x=18
4x2-10x=x-8x2-8x+5=0
2x2-6x+5=05x2-4x=0
x2+10x-1=5x-5x(2x+2)=7+7x
x2-3x+1=02x2-4
x-6=0
4x2+8x-5=0x2-3x=14
3x2-8x=x+8x2+9x-6=0
4x2-4x+4=09x2+4x=0
x2+7x-5=5x-4x(3x+2)=5+3x
x2+5x+10=02x2+2
x+6=0
2x2-9x-10=0x2+10x=20
3x2+8x=x+6x2+3x-9=0
2x2+6x-4=05x2-10x=0
x2+6x+6=9x+10x(3x-5)=2+3x
x2-9x-2=02x2-4
x+2=0
3x2-4x+7=0x2+2x=3
4x2-6x=x-2x2+6x-6=0
4x2+2x+10=03x2-10x=0
x2+3x+1=2x-4x(2x+1)=1-8x
x2+3x-7=03x2-2
x-4=0
3x2+2x-10=0x2-3x=11
4x2+2x=x-4x2-8x+4=0
3x2+8x-7=08x2-2x=0
x2+3x-7=5x-5x(4x+1)=3+6x
x2-4x+1=02x2+4
x+2=0
3x2+6x+1=0x2+5x=4
4x2+8x=x+10x2+5x+2=0
3x2+4x-4=05x2-9x=0
x2+5x+9=2x-1x(2x-3)=7+6x