+147 Find the domain of the real-valued function
$$f(x)=\sqrt{-10x^2-11x+6}.$$
Give the endpoints in your answer as common fractions, not mixed numbers or decimals.
+1223 \(-10x^2 -11x + 6 \geq 0\)
\(-(2x+3)(5x-2) \geq 0\)
\(\boxed{-\frac{3}{2} \leq x \leq \frac{2}{5}}\)
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