$-74-90-75+34-12$
$-10x^2+8x+2=-11x^2+13x-4$
$2y\left(y^2+2y\right)-\left(y^2-y\right)$
$\left(x^3-7\right)\left(x^3+8\right)$
$\frac{x-1}{x+5}-2\ge0$
$y^2-6y+14$
$4-\left(-4\right)$
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