用“十字相乘法”解。
2㎡-11m+12=0
(2m-3)(m-4)=0
2m-3=0,m=2分之3,或
m-4=0,m=4
2㎡-11m+12=0(2m-3)(m-4)=0m1=4m2=3/2
2㎡-11m+12=0(2m-3)(m-4)=0m1=1.5m2=4
2x²-11x+12=0(2x-3)(x-4)=0x1=3/2 x2=4