> 数学 >
x^2+70x-1250
人气:159 ℃ 时间:2020-05-14 14:52:18
解答
x^2+70x-1250
=X²+70X+1225-2475
=(X+35)²-2475
=(x+35-√2475)(x+35+√2475)
=(x+35-15√11)(x+35+15√11)
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版