解一元二次方程海量练习题(共9页).doc
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1、精选优质文档-倾情为你奉上1)x2-9x+8=0 (2)x2+6x-27=0 (3)x2-2x-80=0 (4)x2+10x-200=0 (5)x2-20x+96=0 (6)x2+23x+76=0 (7)x2-25x+154=0 (8)x2-12x-108=0 (9)x2+4x-252=0 (10)x2-11x-102=0 (11)x2+15x-54=0 (12)x2+11x+18=0 (13)x2-9x+20=0 (14)x2+19x+90=0 (15)x2-25x+156=0 (16)x2-22x+57=0 (17)x2-5x-176=0 (18)x2-26x+133=0 (19)x2+1
2、0x-11=0 (20)x2-3x-304=0 (21)x2+13x-140=0 (22)x2+13x-48=0 (23)x2+5x-176=0 (24)x2+28x+171=0 (25)x2+14x+45=0 (26)x2-9x-136=0 (27)x2-15x-76=0 (28)x2+23x+126=0 (29)x2+9x-70=0 (30)x2-1x-56=0 (31)x2+7x-60=0 (32)x2+10x-39=0 (33)x2+19x+34=0 (34)x2-6x-160=0 (35)x2-6x-55=0 (36)x2-7x-144=0 (37)x2+20x+51=0 (38)x
3、2-9x+14=0 (39)x2-29x+208=0 (40)x2+19x-20=0 (41)x2-13x-48=0 (42)x2+10x+24=0 (43)x2+28x+180=0 (44)x2-8x-209=0(45)x2+23x+90=0 (46)x2+7x+6=0 (47)x2+16x+28=0 (48)x2+5x-50=0 (49)x2+13x-14=0 (50)x2-23x+102=0 (51)x2+5x-176=0 (52)x2-8x-20=0 (53)x2-16x+39=0 (54)x2+32x+240=0 (55)x2+34x+288=0 (56)x2+22x+105=0 (
4、57)x2+19x-20=0 (58)x2-7x+6=0 (59)x2+4x-221=0 (60)x2+6x-91=0 1 x2-6x+5=02 2.x2+4x-5=03 3.4x2-12x+5=0 4 x2+4x+4=0 5 2x2-5x+2=06 x2+6x-7=0 7 x2+3x-4=0 8 x2+5x-6=0 9 a2-5a+6=0 10 c2+3c-4=011 2x2+5x-3=0 12 x2-6x+8=0 13 x2-4x-5=0 14 x2-8x+15=0 15 7x2-8x+1=016 4x2-4x-3=0 17 x2-6x+8=0 18 x2-2x-8=0 19 x2+2x-
5、8=0 20 4x2-12x-7=03x-1=0 X+12X+36=24 X-4X+1=8 4(6X-7)-9=0 X+X-1=0 X+1/6X-1/3=0 3x-5x=2 x+8x=9 x+12x-15=0 x-9x+8=0 x+6x-27=0 x-2x-80=0 x+10x-200=0 x-20x+96=0 x+23x+76=0 x-25x+154=0 x-12x-108=0 x+4x-252=0 x-11x-102=0 x+15x-54=0 x+11x+18=0 x-9x+20=0 x+19x+90=0 x-25x+156=0 x-22x+57=0 x-5x-176=0 x-26x+13
6、3=0 x+10x-11=0 x-3x-304=0 x+13x-140=0 x+13x-48=0 x+5x-176=0 x+28x+171=0 x+14x+45=0 x-9x-136=0 x-15x-76=0 x+23x+126=0 x+9x-70=0 x-1x-56=0 x+7x-60=0 x+10x-39=0 x+19x+34=0 x-6x-160=0 x-6x-55=0 x-7x-144=0 x+20x+51=0 x-9x+14=0 x-29x+208=0 x+19x-20=0 x-13x-48=0 x+10x+24=0 x+28x+180=0 x-8x-209=0 x+23x+90=0
7、 x+7x+6=0 x+16x+28=0 x+5x-50=0 x-23x+102=0 x+5x-176=0 x-8x-20=0 x-16x+39=0 x+32x+240=0 x+34x+288=0 x+22x+105=0 x+19x-20=0 x-7x+6=0 x+4x-221=0 x+6x-91=0 x+8x+12=0 x+7x-120=0 x-18x+17=0 x+7x-170=0 x+6x+8=0 x+13x+12=0 x+24x+119=0 x+11x-42=0 x+2x-289=0 x+13x+30=0 x-24x+140=0 x+4x-60=0 x+27x+170=0 x+27x+
8、152=0 x-2x-99=0 x+12x+11=0 x+20x+19=0 x-2x-168=0 x-13x+30=0 x-10x-119=0 专心-专注-专业1.方程x2=16的根是x1=_,x2=_.2.若x2=225,则x1=_,x2=_.3.若x22x=0,则x1=_,x2=_.4.若(x2)2=0,则x1=_,x2=_.5.若9x225=0,则x1=_,x2=_.6.若2x2+8=0,则x1=_,x2=_.7.若x2+4=0,则此方程解的情况是_.8.若2x27=0,则此方程的解的情况是_.9.若5x2=0,则方程解为_.10.由7,9两题总结方程ax2+c=0(a0)的解的情况是:
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