if a and b are non-zero distinct real numbers, determine the nature of the roots of the following quadratic equations.
a) x 2次+(b-a) x + (a-b)2次=0
b) -2(a+1) x 2次+(a-4) x +3a-2=0 for a 不等於 -1
a的answer 系 no real roots
b的answer系 two unequal real roots
话说我数学考过很多次不及格...
还是算了...
我中4..你中4...你d數學咁可怕的
如果比中文我睇的話..我可能幫到你
唉 聽朝借黎抄
我連最易都唔識做
我第一條亂做算= =
第2條..研究緊..
a . x^2+xb-xa+a^2-2ab+b^2=0? 唔太明你打緊乜.一係你用小畫家寫出黎