一元二次方程计算题.doc

(1)x2-9x+8=0 答案：x1=8 x2=1 (2)x2+6x-27=0 答案：x1=3 x2=-9
(3)x2-2x-80=0 答案：x1=-8 x2=10 (4)x2+10x-200=0 答案：x1=-20 x2=10
(5)x2-20x+96=0 答案：x1=12 x2=8 (6)x2+23x+76=0 答案：x1=-19 x2=-4
(7)x2-25x+154=0 答案：x1=14 x2=11 (8)x2-12x-108=0 答案：x1=-6 x2=18
(9)x2+4x-252=0 答案：x1=14 x2=-18 (10)x2-11x-102=0 答案：x1=17 x2=-6
(11)x2+15x-54=0 答案：x1=-18 x2=3 (12)x2+11x+18=0 答案：x1=-2 x2=-9
(13)x2-9x+20=0 答案：x1=4 x2=5 (14)x2+19x+90=0 答案：x1=-10 x2=-9
(15)x2-25x+156=0 答案：x1=13 x2=12 (16)x2-22x+57=0 答案：x1=3 x2=19
(17)x2-5x-176=0 答案：x1=16 x2=-11 (18)x2-26x+133=0 答案：x1=7 x2=19
(19)x2+10x-11=0 答案：x1=-11 x2=1 (20)x2-3x-304=0 答案：x1=-16 x2=19
(21)x2+13x-140=0 答案：x1=7 x2=-20 (22)x2+13x-48=0 答案：x1=3 x2=-16
(23)x2+5x-176=0 答案：x1=-16 x2=11 (24)x2+28x+171=0 答案：x1=-9 x2=-19
(25)x2+14x+45=0 答案：x1=-9 x2=-5 (26)x2-9x-136=0 答案：x1=-8 x2=17
(27)x2-15x-76=0 答案：x1=19 x2=-4 (28)x2+23x+126=0 答案：x1=-9 x2=-14
(29)x2+9x-70=0 答案：x1=-14 x2=5 (30)x2-1x-56=0 答案：x1=8 x2=-7
(31)x2+7x-60=0 答案：x1=5 x2=-12 (32)x2+10x-39=0 答案：x1=-13 x2=3
(33)x2+19x+34=0 答案：x1=-17 x2=-2 (34)x2-6x-160=0 答案：x1=16 x2=-10
(35)x2-6x-55=0 答案：x1=11 x2=-5 (36)x2-7x-144=0 答案：x1=-9 x2=16
(37)x2+20x+51=0 答案：x1=-3 x2=-17 (38)x2-9x+14=0 答案：x1=2 x2=7
(39)x2-29x+208=0 答案：x1=16 x2=13 (40)x2+19x-20=0 答案：x1=-20 x2=1
(41)x2-13x-48=0 答案：x1=16 x2=-3 (42)x2+10x+24=