优质解析
6X -7X+l=0 6X-7X=-1
X -( 7 / 6 ) X+( 7 / 12) =-1 / 6 *( 7 / 12 ) 2
2
2
22
(X-7 / 12)2
=25 / 144 /•X-7/ 12=±5/ 12 AX1=1,X2=1 / 6 5X2
-18=9X 5X2 -9X=18
x2
=
()2 = ・°・ = ±
/•X1=3,X2= 4X2
-3X=52
解：X2 -( 3 / 4 ) X=13
(X-3 / 8)2
=13 /•X-3/8=±29/8 AX1=4,X2 =-13 / 4 5X2
=4-2X 5X2+2X=4 X2 += (X+ ) 2
=
x+=±
X1=-1ZX2=就这么几道，最好去百度搜索，那多(2) xA
2+6x-27=0 答案：xl=3 x2=-9
(3) xA
2-2x-80=0 答案：xl=-8 x2=10
(4) xA
2+10x-200=0 答案：xl=-20 x2=10
⑸xA
2-20x+96=0 答案：xl=12 x2=8
(6)xA
2+23x+76=0 答案：xl=-19 x2=-4
⑺xA2-25x+154=0 答案：xl=14 x2=ll
l)xA
2-9x+8=0答案：xl=8 x2=l
(8) xA
2-12x-108=0 答案：xl=-6 x2=18
(9) xA
2+4x-252=0 答案：xl=14 x2=-18
(10) xA
2-llx-102=0 答案：xl=17 x2=-6
(11) xA
2+15x-54=0 答案：xl=-18 x2=3
(12) xA
2+llx+18=0 答案：xl=-2 x2=-9
(13) xA
2-9x+20=0 答案：xl=4 x2=5
(14) xA
2+19x+90=0 答案:xl=-10 x2=-9
(15) xA
2-25x+156=0 答案:xl=13 x2=12
(16) xA
2-22x+57=0 答案：xl=3 x2=19
(17) xA
2-5x-176=0 答案：xl=16 x2=-ll
(18) xA
2-26x+133=0 答案：xl=7 x2=19
(19) xA
2+10x-ll=0 答案：xl=-ll x2=l
(20) xA
2-3x-304=0 答案：xl=-16 x2=19
(21) xA
2+13x-140=0 答案：xl=7 x2=-20
(22) xA
2+13x-48=0 答案：xl=3 x2=-16
(23) xA
2+5x-176=0 答案：xl=-16 x2=ll
(24) xA
2+28x+171=0 答案：xl=-9 x2=-19
(25) xA
2+14x+45=0 答案：xl=-9 x2=-5
(26) xA
2-9x-136=0 答案：xl=-8 x2=17 (2刀xA
2-15x-76=0 答案：(28) xA
2+23x+126=0 答案：xl=-9 x2=-14
(29) xA
2+9x-70=0 答案：xl=-14 x2=5
(30) xA
2-lx-56=0 答案：xl=8 x2=-7
(31) xA
2+7x-60=0 答案：xl=5 x2=-12
(32) xA
2+10x-39=0 答案：xl=-13 x2=3
(33) xA
2+19x+34=0 答案:xl=-17 x2=-2
(34) xA
2-6x-160=0 答案：xl=16 x2=-10
(35) xA
2-6x-55=0 答案：xl=ll x2=-5
(36) xA
2-7x-144=0 答案：xl=-9 x2=16
(37) xA
2+20x+51=0 答案：xl=-3 x2=-17
(38) xA
2-9x+14=0 答案：xl=2 x2=7
(39) xA
2-29x+208=0 答案：xl=16 x2=13
(40) xA
2+19x-20=0 答案：xl=-20 x2=l
(41) xA
2-13x-48=0 答案：xl=16 x2=-3
xl=19 x2=-4
(42) x2+10x+24=0 答案：xl=-6 x2=-4
A
(43) x2+28x+180=0 答案：xl=-10 x2=-18
A
(44) x2-8x-209=0 答案：xl=-ll x2=19
A
(45) x2+23x+90=0 答案：xl=-18 x2=-5
A
(46) x2+7x+6=0 答案：xl=-6 x2=-l
A
(47) x2+16x+28=0 答案：xl=-14 x2=-2
A
(48) x2+5x-50=0 答案：xl=-10 x2=5
A
(49) x2+13x-14=0 答案：xl=l x2=-14
A
(50) x2-23x+102=0 答案：xl=17 x2=6
A
(51) x2+5x-176=0 答案：xl=-16 x2=ll
A
(52) x2-8x-20=0 答案：xl=-2 x2=10
A
(53) x2-16x+39=0 答案：xl=3 x2=13
A
(54) x2+32x+240=0 答案：xl=-20 x2=-12
A
(55) x2+34x+288=0 答案：xl=-18 x2=-16
A
(56) x2+22x+105=0 答案：xl=-7 x2=-15
A
(57) x2+19x-20=0 答案：xl=-20 x2=l
A
(58) x2-7x+6=0 答案:xl=6 x2=l
A
(59) x2+4x-221=0 答案：xl=13 x2=-17
A
(60) x2+6x-91=0 答案：xl=-13 x2=7
A
(61) x2+8x+12=0 答案：xl=-2 x2=-6
A
(62) x2+7x-120=0 答案：xl=-15 x2=8
A
(63) x2-18x+17=0 答案：xl=17 x2=l
A
() x2+7x-170=0 答案:xl=-17 x2=10
A
(65) x2+6x+8=0 答案:xl=-4 x2=-2
A
(66) x2+13x+12=0 答案：xl=-l x2=-12
A
(67) x2+24x+119=0 答案:xl=-7 x2=-17
A
(68) x2+llx-42=0 答案：xl=3 x2=-14
A
(69) x20x-2=0 答案：xl=17 x2=-17
A
(70) x2+13x+30=0 答案：xl=-3 x2=-10
A
(71) x2-24x+140=0 答案：xl=14 x2=10
A
(72) x2+4x-60=0 答案：xl=-10 x2=6
A
(73) x2+27x+170=0 答案：xl=-10 x2=-17
A
(74) x2+27x+152=0 答案：xl=-19 x2=-8
A
(75) x2-2x-99=0 答案：xl=ll x2=-9
A
(76) x2+12x+ll=0 答案：xl=-ll x2=-l
A
(77) x2+17x+70=0 答案：xl=-10 x2=-7
A
(78) x2+20x+19=0 答案：xl=-19 x2=-l
A
(79) x2-2x-168=0 答案：xl=-12 x2=14
A
(80) x2-13x+30=0 答案：xl=3 x2=10
A
(81) x2-10x-119=0 答案：xl=17 x2=-7
A
(82) x2+16x-17=0 答案：xl=l x2=-17
A
(83) x2-lx-20=0 答案:xl=5 x2=-4
A
(84) x2-2x-288=0 答案：xl=18 x2=-16
A
(85) x2-20x+=0 答案：xl=16 x2=4
A
(86) x2+22x+105=0 答案：xl=-7 x2=-15
A
(87) x2+13x+12=0 答案：xl=-l x2=-12
A
(88) x2-4x-285=0 答案：xl=19 x2=-15
A
() x2+26x+133=0 答案：xl=-19 x2=-7
A
(90) x2-17x+16=0 答案：xl=l x2=16
A
(91) x2+3x-4=0 答案：xl=l x2=-4
A
(92) x2-14x+48=0 答案：xl=6 x2=8
A
(93) x2-12x-133=0 答案：xl=19 x2=-7
A
(94) x2+5x+4=0 答案：xl=-l x2=-4
A
(95) x2+6x-91=0 答案：xl=7 x2=-13
A
(96) x2+3x-4=0 答案：xl=-4 x2=l
A
(97) x2-13x+12=0 答案：xl=12 x2=l
A
(98) x2+7x-44=0 答案:xl=-ll x2=4
A
(99) x2-6x-7=0 答案：xl=-l x2=7
A
(100) x2-9x-90=0 答案：xl=15 x2=-6
A
(101) x2+17x+72=0 答案:xl=-8 x2=-9
A
(102) x2+13x-14=0 答案：xl=-14 x2=l
A
(103) x2+9x-36=0 答案：xl=-12 x2=3
A
(104) x2-9x-90=0 答案：xl=-6 x2=15
A
(105) x2+14x+13=0 答案：xl=-l x2=-13
A
(106) x2-16x+63=0 答案：xl=7 x2=9
A
(107) x2-15x+44=0 答案：xl=4 x2=ll
A
(108) x2+2x-168=0 答案：xl=-14 x2=12
A
(109) x2-6x-216=0 答案:xl=-12 x2=18
A
(110) x2-6x-55=0 答案：xl=ll x2=-5
A
(111) xA
2+18x+32=0 答案：xl=-2 x2=-16
