甲抄错题部份
(2X-A)(3X+B)=6X^2-(2B-3A)X-AB=6x^2+11x-10
AB=10
2B-3A=11,,B=(3A+11)/2
A(3A+11)/2=10
3A^2+11A-20=0
(A+5)(3A-4)=0,,A=-5(B=-2),A=4/3(B=30/4)
乙抄错题部份
(HX-5)(KX-2)=HKX+(-5K-2H)X+10=2x^2-9x+10.
HK=2,,-5K-2H=-9,,K=(9-2H)/5,,H(9-2H)/5=2
-2H^2+9H-10=0,,2H^2-9H+10=0,,(H-2)(2H-5)=0,
H=2(K=1),H=5/2(K=4/5)
(HX+4/3)(KX+30/4)=HKX+(4K/3+30H/4)X+10=2x^2-9x+10.
HK=2,,4K/3+30H/4=-9,,K=(-9-30H/4)/4,,K=(-18-15H)/8
H(-18-15H)/8=2
-15H^2-18H-16=0,此题无解,消
故A=-5,B=-2
(2X-5)(3X-2)=6x^2-19x+10