Asked by Alex
What are the restrictions on x if the solution to the equation -4 - square root 4-x=6 involves real numbers?
Answers
Answered by
Steve
-4 - √(4-x) = 6
-√(4-x) = 10
4-x = 100
x = -96
Unfortunately, this is not a solution, since
-4 - √(100) = -4-10 = -14, NOT 6
√100 is NOT ±10. √100 is 10. So, the equation as written has no real solutions
-√(4-x) = 10
4-x = 100
x = -96
Unfortunately, this is not a solution, since
-4 - √(100) = -4-10 = -14, NOT 6
√100 is NOT ±10. √100 is 10. So, the equation as written has no real solutions
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