$18x+5<705-52x$

$x\left(n\right)=\left(3n-1\right)^3\left(2-5n\right)^5$

$\left(2a+3b\right)^2-\left(2a-3b\right)^2$

$\left(\frac{1}{2}x-\frac{4}{7}\right)^2$

$x^2+12x+10=380$

$\left(-\frac{7}{6}a^{4x-3}b^{2x}c^4\right)\cdot\left(-\frac{3}{14}a^{x-1}bc^x\right)$

$\sin\left(y\right)\cdot\left(cos\left(2\cdot y+z\right)+sin\left(2\cdot y+z\right)\cdot tan\left(y\right)\right)$