Question

PLEASE HELP
Domain of g(x) = square root of (x-1/x+7)
Type your answer in interval notation.
Simplify your answer. Use integers of fractions for numbers in the expression.

Answer 1

\[\sqrt{\frac{x - a}{x + 7}}\]

first thing to consider is that x cannot equal 7, as this will give a zero denominator..

Answer 2

I meant x-1 not x-a

Answer 3

ok... so x can't be -7

and the who fraction needs to be positive as you can't take the square root of a negative number

so x- 1 >= 0

so the domain would be x >= 1

Answer 4

okay thanks!