$y^2-74-30$
$m+1-2m^2$
$-6x^5-5x^4-10x^3-8x^2-7x+2x-2$
$4>2\left(v-1\right)+10$
$\left(7+2b\right)\left(7-2b\right)$
$3x^2-2xy;\:x=2;\:y=1$
$\left(8x^2y-9m^3n^4\right)^2$
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