$4x^2+4x-5$
$0.032\cdot10^4$
$-3t+4=19$
$\frac{3a^5b^2}{9a^{-4}b^2}$
$\left[2x-3\right]^2$
$-3\left(3x+5\right)and-9x+5$
$x^{\left(x^4-2x\right)}$
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