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## Homework Statement

Sqrt 5x2 +11= x+5

State the restrictions for x and solve.

## Homework Equations

5x2+11 ≥ 0

x2≥-11/5

(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