网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
If a-b = -4, what is the value of a2 -2ab + b2?
A
-32
B
-16
C
0
D
16
E
32
参考答案
参考解析
解析：
分解多项式a2- 2ab + b2 = (a-b) 2=16。
分解多项式a2- 2ab + b2 = (a-b) 2=16。
更多 “单选题If a-b = -4, what is the value of a2 -2ab + b2?A -32B -16C 0D 16E 32” 相关考题
考题
听力原文：W: What's the value of US dollars now?M: It's inflated and is losing value against Euro and RMB, while RMB is depreciated against Euro.Q: What does the man think of the US dollars?(14)A．The Euro's value remains unchanged.B．The value of US dollars has changed a lot.C．The American currency is losing value.D．The RMB is increasing in value.
考题
What does VAT stand for?A. Value-Assist TagB. Value-Added TaxC. Value-Added TagD. Value-Assist Tax
考题
Q4 :int iVal1 = 0, iVal2 = 0;int * ipVal;ipVal = iVal1; What is the Value of ipVal = *ipVal =ipVal = (int*)iVal1; What is the Value of ipVal = *ipVal =iVal2 = (int)iVal1; What is the Value of ipVal = *ipVal =
考题
Refer to the exhibit. A company would prefer all Internet - bound OSPF routed traffic to use ISP ABC with ISP DEF as a backup. As the network consultant, what three configuration changes might you make?（）A. The default -information originate command should be configured on router B1 and B4.B. The default -information originate command should be configured on router B2 and B3.C. If the metric value for ISP ABC is set at the default, the I SP DEF metric value should be set to 1.D. If the metric value for ISP ABC is set at the default, the ISP DEF metric value should be set to 25.E. The metric type value should be set to type 1.F. The metric type value should be set to type 2.
考题
以下结论中哪一个是正确的？
A.若方阵A的行列式 A =0，则A=0
B.若A2=0，则A=0
C.若A为对称阵，则A2也是对称阵
D.对任意的同阶方阵有(A+B) (A-B) =A2 -B2
考题
public class SwitchTest { public static void main（String[] args） { System.out.println（“value = “ + switchIt（4））； } public static int switchIt（int x） { int j = 1； switch （x） { case 1： j++； case 2： j++； case 3： j++； case 4： j++； case 5： j++； default： j++； } return j + x； } } What is the result？（） A、 value = 3B、 value = 4C、 value = 5D、 value = 6E、 value = 7F、 value = 8
考题
分析下列反应的熵值是增加还是减少，并说明理由。 （1）I2（s）→I2（g）； （2）H2O（l）→H2（g）+1/2O2（g）； （3）2CO（g）+O2（g）→2CO2（g）； （4）A2（s）+B2（g）→2AB（g）。
考题
设原区间为[a，b]则黄金分割法内分点的取点规则为（）。A、a1＝a＋0.382（a－b）B、a1＝a＋0.382（b－a）C、a2＝a＋0.618（b－a）D、a2＝a＋0.618（a－b）E、a1＝b＋0.382（a－b）
考题
单选题al, a2, a3, a4, as, …., anIn the sequence of positive integers above, al = a2 = 1, a3 = 2, a4 = 3, and as = 5. If each term after the second is obtained by adding the two terms that come before it and if an = 55, what is the value of n?A
12B
10C
9D
8E
5
考题
单选题If the average (arithmetic mean) of a, b, 4, and 10 is 8, what is the value of a + b?A
4B
6C
9D
15E
18
考题
问答题If 4 percent of (p + q) is 8 and p is a positive integer, what is the greatest possible value of q ?
考题
单选题public class SwitchTest { public static void main （String args） { System.out.PrintIn（“value =” +switchIt（4））； } public static int switchIt（int x） { int j = 1； switch （x） { case 1： j++； case 2： j++； case 3： j++； case 4： j++； case 5： j++； default：j++； } return j + x； } } What is the output from line 3？ （）A
Value = 3B
Value = 4C
Value = 5D
Value = 6E
Value = 7F
Value = 8
考题
填空题If((6-3)r+4)/2= 13, what is the value of r?____
热门标签
最新试卷