$4x^2-20x-24y=-97$
$\left(\frac{3}{14}a^2b^3-\frac{2}{3}b^4\right)\left(\frac{3}{14}a^2b^3+\frac{2}{3}b^4\right)$
$\log x+\log\left(x-15\right)=2$
$-2+2+-1+8$
$2x^3+13x^2+8x-48$
$\frac{4^{8}}{4^{5}}$
$-2=\frac{cos\:\theta\:}{sin\:\theta\:}$
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