solve the equation 2x^2-4x=-3 and express the roots in a+bi form.

问题描述:

solve the equation 2x^2-4x=-3 and express the roots in a+bi form.
太久没做了,忘记怎么算了.

求根公式,想不起来了用配方法推导一下,最后表示成虚数就对了!