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bigplanet401
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I don't know what to say. sqrt(4) = +/- 2, but constants are fixed. When written sqrt(4), it seems sqrt(4) is a constant, but not in the latter case. Help!
bigplanet401 said:I don't know what to say. sqrt(4) = +/- 2, but constants are fixed. When written sqrt(4), it seems sqrt(4) is a constant, but not in the latter case. Help!
A better way to solve the equation ##x^2 = 4## is to write it as ##x^2 - 4 = 0## or (x - 2)(x + 2) = 0, from which we get x = 2 or x = -2. No funny business with taking the square root of both sides needed.jack476 said:No, square root of 4 is 2 and only 2, but 2^2 OR (-2)^2 will be equal to 4.
So if you're confronted with something like √x =2, then x is 4. The square root function cannot return a negative real number.
On the other hand, if you've got x^2 = 4, then both x = 2 and x = -2 are valid solutions to that algebraic equation. If you were to solve that equation by taking the square root of both sides, you would have to include x = -2 along with the x = 2 that would be returned by that operation because, unlike the square root function, the squaring function has values for all real numbers.
A constant is a fixed value that does not change. In mathematics, constants are typically represented by letters such as "c" or "k". They are used to represent values that remain the same in a given situation or equation.
Yes, the square root of 4 is always a constant. The square root of a number is the value that, when multiplied by itself, gives the original number. In the case of 4, the square root is 2, which is a fixed value that does not change.
The square root of 4 is considered a constant because it always has the same value of 2. Regardless of the context in which it is used, the square root of 4 will always be 2. This makes it a fixed value or constant.
No, the square root of 4 cannot change. As mentioned before, a constant is a fixed value that does not change. The square root of 4 will always be 2, regardless of any other factors or variables.
The square root of 4 is related to other constants in that it is a constant itself. It is also related to other mathematical constants such as pi (π) and the golden ratio (φ). In certain equations and situations, the square root of 4 may be used in conjunction with other constants to find a solution.