SOLUTION: For what values of x is the value of each expression a real number? 1. square root of x 2. 5-square root of x 3. square root of x+3

Question 153822: For what values of x is the value of each expression a real number?
1. square root of x
2. 5-square root of x
3. square root of x+3
Answer by orca(409) (Show Source): You can put this solution on YOUR website!
1)
For to be a real number, x has to be greater or equal to 0.
2)
For to be a real number, x has to be greater or equal to 0.
3)
For to be a real number, x+3 has to be greater or equal to 0.
I.e., x+3 >=0
Solving the inequality for x, we have
x>=-3

RELATED QUESTIONS
If x = square root of 3 +square root of 2 divided by square root of 3 - square root of 2... (answered by Alan3354)

what is square root of 2/7 minus square root of 7/2? what is 5 square root 16/3 minus... (answered by checkley79)

Square root of 6 * square root of 5 * square root of 4 * square root of 3 * square root... (answered by rothauserc)

My problem involves finding an approximate positive square root for each number. Round a... (answered by LifeDeathnCandy)

1+(1/x^2)=(3/x) what are the solutions to the equation? A. x=(3/2)+(square root of... (answered by Fombitz)

Please show me how to rationalize the denominator for these questions: a^2/square root... (answered by lynnlo)

For what real number(s) x does the expression represent a real number? Square root of... (answered by stanbon)

Solve where x is a real number. square root of x + 4 = 1 + square root of x -... (answered by fractalier)

1+(1/x^2)=(3/x) what are the solutions to the equation? A. x=(3/2)+(square root of... (answered by Theo)