$6y-4+2y$
$\left(2x-3\right)\left(2x+3\right)-\left(3x-2\right)^2$
$\sin^2130+\cos^2130$
$\frac{2}{x+1}+\frac{3}{x-1}-\frac{1}{x^2-1}$
$x^2-3x\ge28$
$-3-2-4-1-7-10$
$\int_0^l\left(\left(x\right)\cdot\left(\frac{3x^2}{2\cdot l^2}-\frac{x^3}{2\cdot l^3}\right)^2\right)dx$
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