Question

6X的平方减4x减3等于0

Answer 1

用配方法解。
6x^2-4x-3=0
解：x^2-(2/3)x+1/2=0
x^2-(2/3)x=1/2
x^2-(2/3)x+1/9=1/2+1/9
(x-1/3)^2=22/36
x-1/3=±(√22)/6
x=(2±√22)/6。