.
The solution the book gives (which I have posted) involves rationalising the denominator.
I got this question but I'm not really sure how one part of the solutions came up
Make x the subject in each of the following and give the values of t for which real solution(s) to the equation can be found.
So I complete the square and get up to
I moved to the other side
So I just take the square root of both sides and subtract -2.
But the solutions say
How come my answer is different...