$7\left(3a-1\right)^2+26\left(3a-1\right)-8$
$-35d^8-146d^7-203d^6-8d^5+159d^4-88d^3-240d^2$
$\frac{7x+1}{5}=-x^2$
$\frac{12x^7+15x^6+24x+3}{3x}$
$4-9n^2$
$\frac{3x+4}{2}-\frac{x}{5}\ge8+\frac{2x+1}{3}$
$\left(y^2-x^2\right)dx=2xydy$
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