exam Maths Puzzle Numerical Ability

How do you find the domain of this function algebraically??

y= square root x / x-1

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exam Other Question

Find teh quotient and the remainder for the followign:

(x^4-2x^2+3) / (x+1)

Thank you for any help you can provide me with. I need help to perform the given operation

f(x)=2x2-13x+15, g(x)=3x+4

I need to find (f+g)(-1)