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Zero is the only number that has only one square root.
The square root of zero is zero.
All other numbers have two square roots.
The square roots of 4 are 2 and -2. Two is referred to as the "principal" square root.
When you get to the grade that discusses imaginary/complex numbers, you'll learn that negative numbers also have square roots. The square roots of -4 are 2i and -2i. 2i is the principal square root.
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What is a number that has a square root of 17?
289 is the only one.
What is a conjugate number of 2 plus square root of 5?
[ 2 minus square root of 5 ] is the only one.
What is the square root of a positive?
The square root of a positive number results in a positive number. For example, the square root of 25 is 5. * * * * * Not true! There are two real square roots for every positive number: one positive and one negative. -5 is as much a square root of 25 as +5 is. However, the positive root is the principal root and so is often presented as the only root.
What the two square roots for 9801?
A number can have only one square root; for 9801, it's 99.
What is the square root of a negative number plus the square root of a negative number?
Nothing. You cannot have a square root of a negative number. The square root of negative one is called i, but i is an imaginary number. It does not exist and does not follow the properties of real numbers. (For example, if a and b are positive, then the square root of a times the square root of b is the square root of ab. But the square root of -7 is not the square root of 7 times i.)
