text: need help wit some algebra 2 problem? y^2+y-30 im trying to findhow y will equal 0 and another number its quadratics if it equals zero, use foil: (y+6)(y-5) = 0  so y = -6 or 5 [since -6 + 6 is zero and so is 5 - 5]  if it equals another number, subtract that from both sides to make it equal zero then use foil (or quadratic formula)  example: y^2 + y - 30 = 12  y^2 + y - 30 - 12 = 12 - 12  y^2 + y - 42 = 0  (y+7)(y-6) = 0  y = -7 or 6