Square Root of 230

The square root is the inverse of the square of the number. 230 is not a perfect square. The square root of 230 is expressed in both radical and exponential form. In the radical form, it is expressed as √230, whereas (230)^(1/2) in the exponential form. √230 ≈ 15.16575, which is an irrational number because it cannot be expressed in the form of p/q, where p and q are integers and q ≠ 0.

The prime factorization method is used for perfect square numbers. However, the prime factorization method is not used for non-perfect square numbers where the long-division method and approximation method are used. Let us now learn the following methods:

• Prime factorization method
• Long division method
• Approximation method

The product of prime factors is the prime factorization of a number. Now let us look at how 230 is broken down into its prime factors.

Step 1: Finding the prime factors of 230 Breaking it down, we get 2 x 5 x 23: 2^1 x 5^1 x 23^1

Step 2: Now we found out the prime factors of 230. The second step is to make pairs of those prime factors. Since 230 is not a perfect square, the digits of the number can’t be grouped in pairs. Therefore, calculating 230 using prime factorization is not straightforward.

The long division method is particularly used for non-perfect square numbers. In this method, we should check the closest perfect square number for the given number. Let us now learn how to find the square root using the long division method, step by step.

Step 1: To begin with, we need to group the numbers from right to left. In the case of 230, we need to group it as 30 and 2.

Step 2: Now we need to find n whose square is 2. We can say n as ‘1’ because 1 x 1 is lesser than or equal to 2. Now the quotient is 1 after subtracting 2-1, the remainder is 1.

Step 3: Now let us bring down 30, which is the new dividend. Add the old divisor with the same number 1 + 1, we get 2, which will be our new divisor.

Step 4: The new divisor will be the sum of the dividend and quotient. Now we get 2n as the new divisor; we need to find the value of n.

Step 5: The next step is finding 2n × n ≤ 130. Let us consider n as 5, now 25 x 5 = 125.

Step 6: Subtract 130 from 125, the difference is 5, and the quotient is 15.

Step 7: Since the dividend is less than the divisor, we need to add a decimal point. Adding the decimal point allows us to add two zeroes to the dividend. Now the new dividend is 500.

Step 8: Now we need to find the new divisor, which is 31, because 310 x 1 = 310.

Step 9: Subtracting 310 from 500, we get the result 190.

Step 10: Continue doing these steps until we get two numbers after the decimal point. Suppose if there is no decimal values continue till the remainder is zero. So the square root of √230 is approximately 15.16.

The approximation method is another method for finding the square roots. It is an easy method to find the square root of a given number. Now let us learn how to find the square root of 230 using the approximation method.

Step 1: Now we have to find the closest perfect squares to √230. The smallest perfect square less than 230 is 225, and the largest perfect square greater than 230 is 256. √230 falls somewhere between 15 and 16.

Step 2: Now we need to apply the formula that is (Given number - smallest perfect square) / (Greater perfect square - smallest perfect square). Going by the formula (230 - 225) ÷ (256 - 225) = 5 ÷ 31 ≈ 0.1613 Using the formula, we identified the decimal point of our square root. The next step is adding the value we got initially to the decimal number, which is 15 + 0.1613 = 15.1613, so the square root of 230 is approximately 15.1613.

• Square root: A square root is the inverse of a square. Example: 4^2 = 16, and the inverse of the square is the square root, that is √16 = 4.
   
• Irrational number: An irrational number is a number that cannot be written in the form of p/q, where q is not equal to zero and p and q are integers.
   
• Principal square root: A number has both positive and negative square roots; however, it is always the positive square root that has more prominence due to its uses in the real world. That is the reason it is also known as a principal square root.
   
• Prime factorization: Expressing a number as the product of its prime factors. For example, the prime factorization of 230 is 2 x 5 x 23.
   
• Decimal: If a number has a whole number and a fraction in a single number, then it is called a decimal. For example: 7.86, 8.65, and 9.42 are decimals.