1/4(4x²+2x-8)-(x²+1/2x-1)其中1/4(4x²+2x-8)-(x²+2x-1)这道呢?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 06:46:38
![1/4(4x²+2x-8)-(x²+1/2x-1)其中1/4(4x²+2x-8)-(x²+2x-1)这道呢?](/uploads/image/z/474127-7-7.jpg?t=1%2F4%284x%26%23178%3B%2B2x-8%29-%28x%26%23178%3B%2B1%2F2x-1%29%E5%85%B6%E4%B8%AD1%2F4%284x%26%23178%3B%2B2x-8%29-%28x%26%23178%3B%2B2x-1%29%E8%BF%99%E9%81%93%E5%91%A2%EF%BC%9F)
1/4(4x²+2x-8)-(x²+1/2x-1)其中1/4(4x²+2x-8)-(x²+2x-1)这道呢?
1/4(4x²+2x-8)-(x²+1/2x-1)其中
1/4(4x²+2x-8)-(x²+2x-1)这道呢?
1/4(4x²+2x-8)-(x²+1/2x-1)其中1/4(4x²+2x-8)-(x²+2x-1)这道呢?
1/4(4x²+2x-8)-(x²+1/2x-1)
=x²+ (1/2)x - 2 - x²- (1/2)x +1
=x² - x²+ (1/2)x - (1/2)x - 2+1
=-1