what is 2x^-18x+28 factors

2x^2 - 18x + 28 this should be the equation. First: find the Greatest Common Factor which is, 2.  2(x^2 - 9x + 14)  Sec: factor the expression in parenthesis...multiply the 1st & 3rd term to get 14. find two numbers that give you 14 when multiplied & -9 (2nd term) when added/subtracted. the numbers are (-2 & -7).  *Rewrite the expression with the new middle terms.  x^2 - 2x - 7x + 14  *With 4 terms, the group "like" terms & factor both sets of parenthesis.  (x^2 - 2x) - (7x + 14)  x(x - 2) - 7(x - 2)  (x - 2)(x - 7)  Now, combine the outer term that was factored earlier (2) with the final result.  2(x - 2)(x-7)