$-5.8-2.1$
$7\left(x+3y\right)-16\left(5x-2y\right)$
$64m^2-25$
$\left(3^x\right)x\left(3^{-x}\right)$
$\frac{dy}{dx}=\ln\left(ax+b\right)$
$16z^4-1$
$-5\left(t-3\right)^2=10$
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