$3^{-1}=\frac{1}{3}$
$4\left(\cos\left(x\right)\right)^2+4\cos\left(x\right)-1$
$8v-5v-2v-v+3v+2=17$
$-5g-\left(8-g\right)=12$
$sen\left(x\right)\left(1+cot\left(x\right)\right)=sen\left(x\right)+cos\left(x\right)$
$y'-y-c=0$
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