$440\cdot60$
$9\:cos^2x\:=\:12\:cos\:x\:-\:4$
$\left(9^2\right)^3+\left(\left(-4\right)^2\right)^3$
$+2500+3000-2550$
$\frac{a^3+5a^2+a-1}{a+5}$
$6^{x+3}=-1$
$10^2-2\cdot10\cdot6+6^2$
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