$x^4-1\ge-x^4+1$
$5x+12<x+16$
$430\cdot15$
$\left(5x+5n\right)\left(5x-5n\right)$
$\left(e^{bx}\right)^3$
$\frac{\sin\left(x\right)}{1+\sin\left(x\right)}+\frac{\sin\left(x\right)}{1-\sin\left(x\right)}=2\tan\left(x\right)\sec\left(x\right)$
$sin2x=2cos\left(x\right)sinx\left(x\right)$
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