Square Root Calculator. Every nonnegative real number a has a unique nonnegative square root, called the principal square root, which is denoted by √ a, where √ is called the radical sign or radix. For example, the principal square root of 9 is 3, denoted √ 9 = 3. √. = ? Calculator to give out the square root result of a positive number.. Step 1: Enter the radical expression below for which you want to calculate the square root. The square root calculator finds the square root of the given radical expression. If a given number is a perfect square, you will get a final answer in exact form. If a given number is not a perfect square, you will get a final answer in exact form and.
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[Best Answer] find the square root of 49 and 81 by the method repeated subtraction pls help me
Starting with the first set: the largest perfect square less than or equal to 49 is 49, and the square root of 49 is 7 . Therefore, put 7 on top and 49 at the bottom like this: 7. 49. 49. That’s it! The answer shown at the top in green. The square root of 49 with one digit decimal accuracy is 7. Notice that the last two steps actually repeat.. Our first attempt will be to try to see if we can use perfect squares. So, let’s see if we can rewrite 49 as a product of a number times itself. Well, we know the common perfect square of: 7 × 7 = 49 7×7 = 49. Therefore: \sqrt {49} = \sqrt { 7^ {2} } = 7 49 = 72 = 7. Thus, helping us arrive at the conclusion that the Square Root of 49 is 7.
