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 negativ

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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 negativ
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?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 negativ
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】

2.(不对)4y永远=4?
3.(不对)4x-4y=8xy?
4.(对)x为自然数,2x+1一定为奇数
5.(对)当a=4,b=3时,P=4a+2b=4*4+2*3=16+6=22
1.(不对)-6>-4 ?
2.(不对)两个负数的和是正数 ?
4.(不对)同上
?表示对问题的疑问,即表示"不对"

2.(incorrect)
3.(incorrect)
4.(correct)
5.(correct)
1.(incorrect)
2.(incorrect)
4.(correct)

2.()
3.()
4.(对)
5.(对)
1.(错)
2.(错)
4.(对)