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What is x if it is a positive real number and x squared is equals to 5?
Wiki User
∙ 11y ago
If x squared = 5 then x = sqrt(5) = 2.2361 (approx).
Wiki User
∙ 11y ago
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Why does the square root of -25 have no real solution?
Because the square root of -25 would be that number that, squared, would equal -25. No number, positive or negative, can result in a negative square. Since -25 is a negative number, no number, positive or negative, can be squared to equal -25.
What does the mathematical term undefined mean?
This term is used when the result of a certain operation isn't defined. For example, you can't divide one by zero (or any other number by zero), because that would mean that zero times some number equals one; but this is never the case. Or, when calculating with real numbers, you can't take the square root of a negative number, because the square of either a positive or a negative number gives a positive number; no real number, when squared, gives a negative result.
What is the domain of y equals x squared plus nine?
all real numbers
If a and negative b are complex numbers what will make it positive?
Multiplying any complex number by its conjugate will result in a positive real number. For any complex number x + yi, {x and y are real numbers} its conjugate is x - yi, and the multiplication equals x2 + y2
Is it possible for a to be a negative number in the equation a squared equal b explain why or why not?
Of course it is. 'a' can be any positive or negative number, and 'b' is its square.That's no problem.What is difficult is for 'b' to be a negative number in the same equation.No real number for 'a' can produce a negative 'b'.
Can the area of a square be negative?
not in the real world. The area of a square = The length of a side, squared. Any number squared is positive.
When you square a negative number is it positive or negative?
The square of a real number is always positive no matter which real number you start with. Therefore, a negative number squared is positive. For example: 2 * 2 = 4, -2 * -2 = 4.
Is 5 squared a real number?
Yes, Any real number squared is a real number. In this case that number is 25.
What are 3 real rational solutions to this system of equations z equals x squared y equals z squared x equals y squared?
The two rational solutions are (0,0,0) and (1,1,1). There are no other real solutions.
Why does the square root of -25 have no real solution?
Because the square root of -25 would be that number that, squared, would equal -25. No number, positive or negative, can result in a negative square. Since -25 is a negative number, no number, positive or negative, can be squared to equal -25.
Is -18 squared a real number?
Yes, it is a real number.
Is 7 a mathematical real number?
Yes. '7 squared' means 7 x 7, which equals 49.
What does X equals in this problem X squared plus 4 equals 0?
If we start with x2 + 4 = 0, the next conclusion is that x2 = -4. All real numbers have a positive result when multiplied by themselves, so therefore we are dealing with an imaginary number. The square root of minus four is 2i.
What squared number equals 60?
The number is close to 7.74596669... The real one is irrational, so I can't write it exactly, no matter how many digits I use. But the number I wrote is within 0.000000031 percent of the actual real one.
What does the mathematical term undefined mean?
This term is used when the result of a certain operation isn't defined. For example, you can't divide one by zero (or any other number by zero), because that would mean that zero times some number equals one; but this is never the case. Or, when calculating with real numbers, you can't take the square root of a negative number, because the square of either a positive or a negative number gives a positive number; no real number, when squared, gives a negative result.
Domain of y equals square root of 16-x squared divided by 2?
14
Solve x squared equals -25?
x2 = -25 There exists no real number for which this is true, so we must use imaginary numbers... x = 5i
