$5.5x\:+\:4\:=\:8x\:-\:19$
$s=\frac{7}{8\pi}\sin\left(8t\right)+\frac{7}{9\pi}\cos\left(9t\right)$
$\left(-12\right)+\left(-6\right)-\left(-7\right)+\left(+4\right)-\left(-10\right)$
$9x^2+30x+15$
$\left(9xy\right)^4$
$\left(a^{-2}\right)\left(a^{-3}\right)\left(a^8\right)$
$x^2-32x+256=0$
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