(y - 5)(y - 6)
This is not factor-able.
25x2 - 10xy + y2 = (5x - y)2
(y + 5) (y + 2)
(y+2)(y+3)
(y + 7)(y + 7)
2y2 + y = -11yAdd 11y to each side of the equation:2y2 + 12y = 0Divide each side by 2:y2 + 6y = 0Factor the left side:y (y + 6) = 0The equation is true if either factor is zero:y = 0or (y + 6) = 0y = -6
(x2 - xy + y2)(x + y)
(y - 8)(y - 2)
(y-12)(y-2)
(y - 1)(y - 4)
(y + 5)(y - 4)
(3x - y)(3x - y)