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Domain of advanced piecewise functions

f(x)={4x+5if x>1x2+3xif x<1f(x)=\begin{cases} 4x+5&\text{if } x>1 \\ \\ -x^2+3x & \text{if } x< -1 \end{cases}
What is the domain of function ff?
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Choose 1 answer: