如题,谢谢大家!!!
15x2(x2)-15x2 = 0;
15x2(x2-1) = 0;
15x2 = 0 or x2-1 = 0;
x = 0, 1, -1;
你这两个X如果是一样的东西的话,出这个问题的人要不然是脑残要不然故意耍人。
如果是power的话,下次可以用这个,大家就明白了。
15^4 - 15^2 = 0
thank you very much for your help.
I got the same answer as well but the model answer is 3 to the power of -1/4 and -3 to the power of -1/4. So i have no idea why it’s so different???
谢谢!!!
你把答案带进去算,结果就不是0.model answer也有写错的时候
认同认同,我也是这样认为的,可是我朋友不相信,非要问为什么和model answer不一样,我没办法了,所以才来请教大家的!!谢谢了!!
这是初中问题吧。。。多项式展开来解方程