$2\ln\left(x-7\right)=6$
$\left(9x-y-7\right)\left(-3xy\right)$
$-5x+8x^2-3x+9x^2+5$
$x^310x^2+25$
$\left(v+4\right)\left(v-1\right)$
$y'=e^{2y}$
$7x^2+70-70$
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