If x is an integer, which of the following must be an even intege

您还没有登录，登录以后才可以查看答疑和进行提问。

试题详情

If x is an integer, which of the following must be an even integer?

A、$$x^2-x-1$$
B、$$x^2-4x+6$$
C、$$x^2-5x+5$$
D、$$x^2+3x+8$$
E、$$x^2+2x+10$$

答案：D

专业教师答疑

最新

提问

还没有人问到这里。

问个问题

答疑小程序

最热提问

Sentence Equivalence
The photographer_____posed the bride for her portr......
Text Completion
The historian's narrative of the dynasty's decline......
Sentence Equivalence
Scientists should hope the faults in their theorie......
Sentence Equivalence
Her attempts to wrest fiction free from traditiona......
Text Completion
Like all general models, island biogeography theor......
Text Completion
For many adults, the adolescent years occupy (i)__......
Sentence Equivalence
Despite its best efforts to stimulate sales, the b......
Sentence Equivalence
The writer’s assignment of the critic includes p......