8平方是有理数吗

有理数是两个整数的和。它包含所有整数，可以写成分数或小数。它由字母“Q”表示。当你除一个有理数时，结果是十进制形式，它可能是结束的，也可能是循环的。有理数的例子有 3、4、5 等，可以用分数形式表示为 5/1、8/1 和 11/1。

无理数是那些不能表示为分数或整数比的数。它可以用小数表示，小数点后有无限个不重复的数字。它由字母“P”表示。任何不是有理数的整数都是无理数。无理数可以用小数表示，但不能用分数表示，这意味着它们不能表示为两个整数的比率。无理数在小数点后有无数个不重复的数字。
无理数是不能用整数比表示的实数。例如。√5是一个无理数，

无理数的十进制展开既不是结束也不是循环。无理数被定义为没有比率或无法说明比率的数，即只能用根来表示的数。另一方面，无理数不能表示为两个整数的比率。

8平方是有理数吗

解决方案：

Rational numbers are the numbers that can be expresses as in the form of p/q .or in the ration of two integers. It includes all the integers and can be represented in fractions as well as decimal .

A rational number is a sort of real number that has the form p/q where q ≠ 0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal.

Therefore, 8² = 8 × 8 = 64, it can be expressed in form of p/q i.e 64/1.

Hence, yes 8 squared is a rational number .

类似问题

问题1：7的平方是有理数吗？

解决方案：

Rational numbers are the numbers that can be expresses as in the form of p/q or in the ration of two integers. It includes all the integers and can be represented in fractions as well as decimal .

A rational number is a sort of real number that has the form p/q where q ≠ 0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal.

Therefore, 7² = 7 × 7 = 49 , it can be expressed in form of p/q i.e 49/1.

Hence, yes 7 squared is a rational number.

问题2：7的平方根是有理数吗？

回答：

Here, the given number, √7 cannot be expressed in the form of p/q. Alternatively, 7 is not a prime number but a rational number. √7 is equal to 2.645751… which gives the result of non terminating and non recurring digit after decimal, and cannot be expressed as fraction.

So, √7 is not a rational Number.

问题 3：确定 4.257257... 是否是有理数。

回答：

A rational number is a sort of real number that has the form p/q where q ≠ 0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. Here, the given number, 4.257257… has recurring digits.

Hence, 4.257257.. is a rational number.

问题 4：9 的平方是有理数吗？

解决方案：

Rational numbers are the numbers that can be expresses as in the form of p/q .or in the ration of two integers . It includes all the integers and can be represented in fractions as well as decimal .

A rational number is a sort of real number that has the form p/q where q ≠ 0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. Here 9 is a rational number.

Therefore, 9² = 9 × 9 = 81, it can be expressed in form of p/q i.e 81/1

Hence, yes 9 squared is a rational number.

问题5：√5是有理数还是无理数？

回答：

A rational number is a sort of real number that has the form p/q where q ≠ 0. When a rational number is split, the result is a decimal number, which can be either a terminating or a recurring decimal. Here, the given number, √5 cannot be expressed in the form of p/q. Alternatively, 5 is a prime number or rational number.  

Here, the given number √5 is equal to 2.23606.. which gives the result of non terminating and non recurring decimal, and cannot be expressed as fraction.

So, √5 is Irrational Number.

问题6：判断√3×√5的乘积是有理还是无理？

解决方案：

Given: √3 × √5 both are irrational numbers but it is not necessary that the product of two irrational number will be irrational.

Therefore, √3 × √5

= √15

But here square root of 15 is 3.8729833… which is non terminating and non recurring after decimal.

Hence, the product of √3 × √5 is irrational.