$\cos8^{\circ}\cdot\cos22^{\circ}-\sen8^{\circ}\cdot\sen22^{\circ}$
$4\sin\left(3x\right)\sin\left(2x\right)$
$55-x<25$
$\frac{\sin\left(x\right)^2}{\cos\left(x\right)^2+3\cos\left(x\right)+2}$
$-3\left(\left(-4-b\right)\left(1+b\right)+1\right)-8b$
$\left(3x+\sqrt{2}y\:+1\right)^2$
$\left(4x^{5}-3\right)^{2}$
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