2.The result of 9y -5y is always 4对么?
2.The result of 9y -5y is always 4对么?
3.The result of 4x - 4y is always 8xy对么?
4.If x is an integer,the value of the expression 2x+1 must be odd对么?
5.If P=4a+2b,when a=4 and b=3,P=22对么?
1.-6 is greater that -4对么?
2.The sum of 2 negative numbers must be positive对么?
4.The product of 2 negative numbers must be positive对么?
请将下面的进行复制然后作答(谢谢大家!):
2.()
3.()
4.()
5.()
1.()
2.()
4.()
空格里可以用中文写“对或不对”也可以用英文写“correct or incorrect”
2.The result of 9y -5y is always 4对么?【错,取决于y的取值】
3.The result of 4x - 4y is always 8xy对么?【错】
4.If x is an integer,the value of the expression 2x+1 must be odd对么?【对的】
5.If P=4a+2b,when a=4 and b=3,P=22对么?【对的】
1.-6 is greater that -4对么?integer【错】
2.The sum of 2 negative numbers must be positive对么?【错,还是负数】
4.The product of 2 negative numbers must be positive对么?【对的,负负得正】