一元二次方程专项练习 21.docx
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一元二次方程专项练习 21.docx
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一元二次方程专项练习21
x2+2x-11=05x2+2(2x+4)=02y2+10y-20=0
x2-7x-13=06x2+2(3x+2)=05y2+2y-11=0
x2-6x+20=05x2-2(3x-1)=04y2+7y-14=0
x2-10x+3=04x2-5(2x-4)=04y2+2y+10=0
x2-3x+10=05x2-3(3x+4)=05y2+8y+18=0
x2-6x-11=06x2-3(2x+5)=04y2+4y+4=0
x2+2x+20=06x2+2(2x+1)=02y2+8y+17=0
x2+10x+3=06x2-2(3x-3)=02y2-7y+20=0
x2+3x+7=04x2+5(2x-5)=03y2-7y+3=0
x2-4x-17=02x2+2(2x-3)=02y2-8y-17=0
x2-6x-13=04x2+4(3x-5)=05y2+5y-3=0
x2+9x+6=02x2-3(4x-1)=04y2+3y+7=0
x2+9x+15=06x2-3(2x-1)=02y2-5y+9=0
x2+5x+7=05x2+3(3x+4)=03y2-7y+16=0
x2+10x+14=02x2-4(4x-5)=05y2+4y+5=0
x2+3x-12=06x2+3(4x+5)=03y2+5y-1=0
x2-3x-8=04x2+3(4x+3)=02y2+7y-17=0
x2-3x+9=04x2+2(3x+3)=03y2+7y-6=0
x2-6x+6=03x2+3(4x-1)=05y2-2y-7=0
x2-10x-16=06x2+2(2x+3)=05y2-3y+7=0
x2-10x-15=03x2-3(3x+2)=03y2-10y+13=0
x2-2x+14=02x2+3(2x-5)=04y2+5y-11=0
x2-7x+5=05x2-3(4x-4)=03y2-5y+17=0
x2-7x+17=04x2-4(4x+2)=02y2-8y-4=0
x2-9x+20=05x2+2(3x+3)=03y2-9y+14=0
x2-2x-7=03x2-5(2x+2)=03y2+5y+10=0
x2+3x+11=05x2-5(2x+5)=04y2-7y+6=0
x2+5x+8=04x2+5(2x-5)=02y2-5y+15=0
x2+2x+3=02x2-4(3x-2)=04y2-4y-12=0
x2-9x-12=04x2-3(3x+2)=05y2+5y+3=0
x2-6x-12=02x2-4(3x+4)=04y2-9y+14=0
x2-2x+15=03x2+2(4x-2)=05y2-7y+11=0
x2+5x+15=06x2+3(4x-5)=03y2+4y-11=0
x2-2x-4=05x2-4(2x-1)=02y2+6y-8=0
x2+3x-10=03x2-3(3x+3)=04y2+6y+1=0
x2-8x-1=03x2-3(2x-3)=03y2-8y+20=0
x2-8x-19=05x2+3(2x-3)=05y2+3y-18=0
x2-3x+20=04x2-3(4x+1)=03y2+7y-2=0
x2-6x-3=06x2+3(2x+1)=05y2+7y+13=0
x2+7x-19=02x2-2(4x+2)=05y2-9y+10=0
x2-4x-15=05x2-5(2x-3)=02y2+3y+7=0
x2-3x+16=05x2-3(4x+3)=04y2-3y+14=0
x2+8x+14=02x2+2(3x+2)=04y2-3y-14=0
x2+9x+11=06x2+3(4x-2)=02y2-5y+16=0
x2+2x+2=06x2-4(2x-5)=04y2+7y-19=0
x2+2x+13=06x2+5(4x-2)=05y2+7y+15=0
x2-9x-15=05x2+2(2x-4)=04y2-7y-2=0
x2+10x-3=04x2-3(3x-2)=03y2+10y-16=0
x2+8x+3=04x2-5(3x-1)=03y2-2y-4=0
x2+10x-4=02x2+2(4x+5)=02y2+4y-7=0
x2-2x+9=02x2-3(3x-5)=03y2+4y-10=0
x2+3x+6=02x2-2(4x+1)=05y2-8y+7=0
x2+5x-7=06x2-4(2x+1)=05y2+2y-4=0
x2-10x-9=02x2-2(3x+2)=03y2+5y-13=0
x2+4x-16=04x2+3(3x+3)=03y2-4y-11=0
x2+5x+10=03x2+4(3x-4)=05y2+7y-4=0
x2+7x+11=02x2-4(4x+2)=02y2+6y-12=0
x2+3x-4=04x2-5(4x-1)=02y2+8y-20=0
x2-4x-14=03x2-3(2x+3)=04y2-3y-20=0
x2-9x+18=03x2-5(4x-5)=05y2+5y+4=0
x2+2x+3=06x2-2(3x+4)=05y2-5y+7=0
x2+2x-7=06x2+4(3x-3)=04y2+6y-8=0
x2+8x+14=02x2-5(2x-1)=05y2+2y+5=0
x2+8x+19=02x2-3(3x-2)=02y2-2y+8=0
x2-4x+14=03x2-4(4x+2)=02y2+3y-1=0
x2+7x+2=05x2-5(4x-3)=05y2-2y+13=0
x2-7x-7=02x2+3(4x-5)=03y2+2y-8=0
x2-10x-14=06x2+5(2x+4)=02y2-8y-5=0
x2+8x-3=02x2+3(3x-4)=04y2+4y-14=0
x2+2x-4=02x2-5(3x+5)=02y2-6y-7=0
x2+9x-12=04x2+5(3x-3)=04y2-9y-11=0
x2-4x-7=04x2-3(2x+1)=04y2+4y-12=0
x2-5x-14=06x2-4(3x-3)=05y2-7y-15=0
x2-8x+20=05x2+5(4x+1)=03y2+4y-19=0
x2+8x-15=05x2-3(3x-3)=02y2+9y-7=0
x2+8x-17=02x2+3(4x+1)=03y2+9y+11=0
x2-10x+8=03x2-4(2x-2)=03y2+4y-6=0
x2-10x+5=02x2+5(4x-1)=04y2-10y+17=0
x2+5x-12=02x2-4(4x-1)=04y2+8y-4=0
x2+10x+1=02x2-2(2x+5)=02y2-7y+4=0
x2+4x-6=06x2+4(3x+5)=03y2-7y+13=0
x2+3x+20=04x2+3(3x+3)=03y2-3y-14=0
x2-5x-16=04x2+4(3x-4)=04y2+4y-11=0
x2-10x-9=06x2-5(3x-3)=02y2+5y-3=0
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