Sqrt 5x2 +11= x+5
State the restrictions for x and solve.
5x2+11 ≥ 0
(then how can u take the sqrt of a negative number??)
The Attempt at a Solution
The answer at the back of the book is 7/2, -1
I don't know what I'm doing wrong but I keep getting 7 and -2 for x??? That is when I isolated the sqrt to one side of the equation, squared it and factored it.
Also pls explain how to get the restrictions