$\left(+5.9\right)+\left(-2.3\right)$
$x^5-16x-15x^3$
$\frac{a^2}{4}ab+b^2$
$tan\left(4x\right)=-1$
$\left(5p-4\right)\left(2p+3\right)$
$\left(abcd\right)^0$
$20xy-15y+5y$
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