当x小于或等于5时,化简2(x-3)+3|x-5|
问题描述:
当x小于或等于5时,化简2(x-3)+3|x-5|
答
2(x - 3) + 3| x - 5 |
= 2(x - 3) + 3(5 - x)
= 2x - 6 + 15 - 3x
= -x + 9