(2x-10)(x-10)·5=500怎么算?

写仔细点,谢谢
2025-03-07 03:25:42
推荐回答(1个)
回答1:

(2X-10)(x-10)*5=500(2X-10)(x-10)=100(X-5)(x-10)=50X2-15X+50=50X2-15X=0X(X-15)=0X=0 或X=15