Factoring trinomials when a=1
Factor completely: 112x^3-14x^2-80x+10
2(7x^2-5)(8x-1)
Factor completely: 4x^2-12x-216
4(x-9)(x+6)
Factor completely: 2x^3+14x^2-60x
2x(x+10)(x-3)
-81y^3x^5z^2+90y^2xz^5-45y^8
9y^2(-9x^5yz^2+10yz^5-5y^6)
Factor completely: 2r^3-7r^2-8r+28
(r-2)(r+2)(2r-7)