exam Maths Puzzle Numerical Ability

what is domain x^3 - X^2 - 2x +2/x^2-1

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exam Other Question

please use a graph
=|1|+2 Please help! I am getting several different solutions. I am lost.
Use the properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Evaluate.
log5 (x + 4) - log5 (x + 1)