Square Root Of 1989 In Simplest Radical Form
Simplify the square root of 1989 to its lowest radical form.ANSWER: 3√221
3√221 is in the lowest radical form.
Simplified Radical Form of √1989
One of the main facts used to simplify square roots is that the square root of a product is equal to the product of square roots: √(x×y) = √x×√y
Explanation:
When we find square root of any number, we take one number from each pair of the same numbers from its prime factorization and we multiply them.
Step 1: List Factors
To simplify √1989, we need to divide into factors.
√1989 = √3 x √3 x √13 x √17Step 2: List Perfect Squares
1 is a perfect square and divides 1989
9 is a perfect square and divides 1989
Step 3: Divide To Perfect Square
Divide 1989 by the largest perfect square you found in the previous step:
Step 4: Calculate The Square Root
Calculate the square root of the largest perfect square:
Final Step :
Put Steps 3 and 4 together to get the square root of 1989 in its simplest form: 3√221
How do you simplify √1989
The general approach is to first check if it is a perfect square. If so, you have the answer. If it is not a perfect square, see if any of its factors are perfect squares, or can be combined to make square numbers.
Find the lowest prime number that can divide 1989. Divide 1989 repeatedly using the long division method till you reach 1.
A pair of factor 'twins' under a square root sign (radical) form a single factor outside of it.
Factors that do not have a twin remain under the radical. Multiply them back together and leave them in there.
So, the answer is 3√221.
Simplified Decimal Form of √1989
The square root of 1989 is approximately 44.598 when expressed in decimal form.
Calculation Table:
Square Root | Answer | Calculation |
---|---|---|
√99 | 3√11 | √3 x √3 x √11 |
√46 | Square root of 46 is the simplest radical form. | √2 x √23 |
√53 | Square root of 53 is the simplest radical form. | √53 |
√404 | 2√101 | √2 x √2 x √101 |
√966 | Square root of 966 is the simplest radical form. | √2 x √3 x √7 x √23 |
√782 | Square root of 782 is the simplest radical form. | √2 x √17 x √23 |
√6854 | Square root of 6854 is the simplest radical form. | √2 x √23 x √149 |
√6817 | Square root of 6817 is the simplest radical form. | √17 x √401 |
√5461 | Square root of 5461 is the simplest radical form. | √43 x √127 |