Answer
$1$
Work Step by Step
$\frac{6(8-10)^3+(-2)}{(-5)^2(-2)}\\=\frac{6(-2)^3+(-2)}{25(-2)}\\=\frac{6(-8)+(-2)}{-50}\\=\frac{-48+(-2)}{-50}\\=\frac{-50}{-50}=1$
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