$-15x^4-17x^3-8x^2+60x$

$-15x^4-17x^3-8x^2+6x$

$4x^4+10x^2+8x$

$4x^3+10x^2+8x+2$

$-96x^3y-112x^2y^2+10xy^3-108x^2y+9xy^2$

$-96x^3y-112x^2y+10xy^2-108x^2y+9xy^2$

$-49x^5+56x^4-49x^3+24x-12$

$-49x^6+56x^4-49x^3+24x-12$

$-100x^6+7x^3+10x$

$-100x^6+7x^3+19x$

$90x^3y^5z^2+90x^2y^6z^2+945x^2y^5z^3+90x^4y^2z^3+90x^3y^3z^3+945x^3y^2z^4$

$90x^3y^5z^2+90x^2y^6z^2+945x^2y^5z^3+90x^4y^2z^3+945x^3y^2z^4$

$60x^7+78x^6-4x^5+130x^4-9x^2$

$60x^7+75x^6-4x^5+130x^4-9x^2$

$12x^7-21x^6+74x^5-77x^4+110x^3$

$12x^7+21x^6+74x^5-77x^4+122x^3$

$-55x^5+176x^4y^2-10x^2y^4+32xy^5+25x^4y-80x^3y^2$

$-55x^5+176x^4y^2-10x^2y^3+32xy^5+25x^4y-80x^3y^2$

$30x^3-22x^2-36x+16$

$20x^3+30x^2+22x+16$