$\sqrt{2}+3\cdot\sqrt{2}$
$\frac{-2\cos\left(x\right)\left(1-\cos\left(x\right)\right)}{\sin\left(x\right)\left(1+\cos\left(x\right)\right)}$
$3-3\left(4-4\left(3-7\right)+1\right)$
$x^2+3x-2+2x^2-x+6$
$8+2x+8x+10$
$\left(6x^3\:-\:10x^2+12x\:+\:8\right)\:entre\:\:\:\left(x\:-\:1\right)$
$0,09x^{6}+1-0,6x^{3}$
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